In distance miles from
| Name | Address | Town | State | Zip Code | Phone | Website | Improvement Types | |
|---|---|---|---|---|---|---|---|---|
| 20/20 Air Mechanical Corporation | 50 South End Plaza | New Milford | CT | 06776 | (203) 456-1577 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| 3G Chimney, LLC | 398 Main Street | Torrington | CT | 06790 | (860) 489-0700 | Website | Masonry | |
| 4-M Plumbing & Heating LLC | 11 Middle Road | Preston | CT | 06365 | (860) 886-6857 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| 4U Heatin & Cooling Services, LLC | 9 North Street | East Haven | CT | 06512 | (203) 988-2255 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| 72 Degrees A/C & Heating, LLC | 43 West Main Street | Baltic | CT | 06330 | (860) 591-8085 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| A & B Cooling & Heating Corp. | 660 Nutmeg Road North | South Windsor | CT | 06074 | (860) 528-4436 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, Heat Pumps | |
| A & G Mechanical LLC | 20 Mill Hill Avenue | Bridgeport | CT | 06606 | (203) 515-6666 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| A & S Nathan Heating & Cooling LLC | Ansonia | CT | (203) 735-5332 | Website | Boilers/Furnaces, Central Air Conditioning | |||
| A and S Home Improvement | 41 Graham Road | East Hartford | CT | 06118 | (860) 502-2513 | Insulation, Masonry, Roofing, Siding | ||
| A First Response HVAC | P.O. Box 8027 | Berlin | CT | 06037 | (860) 880-0012 | Website | Boilers/Furnaces, Central Air Conditioning | |
| A Plus Exterior LLC | 215 Bridgeport Avenue | Milford | CT | 06460 | (203) 685-7121 | Website | Roofing, Siding, Windows/Doors | |
| A Touch of Air Property Services LLC | 179 West Street, Route 85 | Bolton | CT | 06043 | (860) 729-3945 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| A-1 Windows & Doors, LLC | 7 Herman Drive | Simsbury | CT | 06070 | (860) 651-9093 | Website | Siding, Windows/Doors | |
| A.E. Olsen Company, Inc. | 1257 Southford Road | Southbury | CT | 06488 | (203) 264-6571 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, Heat Pumps, Plumbing | |
| A1 Home Improvement LLC | 80 Becker Avenue | Berlin | CT | 06037 | (860) 202-2697 | Website | Masonry, Plumbing, Roofing, Siding, Windows/Doors | |
| A1 Services, Inc. | 127 Colony Street | Meriden | CT | 06451 | (203) 238-2147 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| AAA Plumbing, LLC | 711 N. Mountain Road | Newington | CT | 06111 | (860) 663-1799 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Abbarrac Holdings, LLC | 147 Coleman Road | Wethersfield | CT | 06109 | (860) 761-9681 | Website | Masonry | |
| Able Construction | 29 E. Cliff Street | Norwich | CT | 06360 | (860) 428-6863 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Abreu Construction, LLC | 222 Main Street # 202 | Farmington | CT | 06032 | (203) 757-7202 | Website | Hazardous Material Abatement, Masonry | |
| Absolute Air Services, LLC | 10B Stack Street | Middletown | CT | 06457 | (860) 666-4200 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Absolute Mechanical Systems LLC | P. O, Box 958 | Southington | CT | 06489 | (860) 621-1975 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps | |
| Absolute Plumbing & Heating, LLC | P.O. Box 789 | Trumbull | CT | 06611 | (203) 673-8621 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Accent Windows & Doors, LLC | 70 Holcomb Street | Simsbury | CT | 06070 | (860) 651-4146 | Website | Siding, Windows/Doors | |
| Access Agency, Inc. | 1315 Main Street Suite 2 | Willimantic | CT | 06226 | (860) 450-7400 | Website | HES audit, Insulation, Windows/Doors | |
| Accu-Temp Mechanical Services, Inc. | 522 Wolcott Road | Wolcott | CT | 06716 | (203) 579-0557 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Accutemp Heating and Cooling, LLC | 335 Winchester Road | Winsted | CT | 06098 | (860) 309-0174 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps | |
| Action Construction Inc | 45 Beaver Brook Road | Danbury | CT | 06810 | (203) 790-4463 | Website | Boilers/Furnaces, Masonry, Plumbing | |
| Action Windows & Siding, LLC | 220 South Street | West Hartford | CT | 06110 | (860) 953-1936 | Website | Geothermal, HES audit, Siding, Windows/Doors | |
| Adapt Builders | 235 Court Street | Middletown | CT | 06457 | (860) 209-9254 | Masonry, Roofing, Siding | ||
| Added Comfort, LLC | 59B Old Church Road | Oxford | CT | 06478 | (203) 881-0067 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| ADJ of Stamford, Inc. | 618 Atlantic Street | Stamford | CT | 06902 | (203) 348-6448 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Adolf Krueger Co. Inc. | 34 Stony Hill Road | Bethel | CT | 06801 | (203) 743-2255 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Advance Plumbing & Heating, Inc. | 700 D North Mountain Road | Newington | CT | 06111 | (860) 232-3053 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Advanced Heating & Air Conditioning, Inc. | 701 Nutmeg Road North, Suite 3 | South Windsor | CT | 06074 | (860) 282-0205 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps, Insulation | ||
| Advanced Mechanical Services LLC | 2 Right Lane | Farmington | CT | 06032 | (860) 404-5865 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Advanced Mechanical Systems | New Haven | CT | (203) 469-0371 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |||
| Advanced Plumbing Services | 89 Avon Street | Stratford | CT | 06615 | (203) 650-1745 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Advanced Window Systems, LLC | 71 Deming Road | Berlin | CT | 06037 | (860) 829-8044 | Website | Roofing, Siding, Windows/Doors | |
| Aegis Solar Energy, Inc. | 81 School Ground Road | Branford | CT | 06405 | (203) 481-2187 | Website | HES audit, Solar | |
| AES Windows & Doors | P.O. Box 3027 | Fairfield | CT | 06430 | (203) 650-0702 | Website | Windows/Doors | |
| AF Contracting LLC | 70 Colonial Road | Stamford | CT | 06906 | (914) 438-6604 | Website | Masonry | |
| Affordable Heating & Air Conditioning, LLC | 30A Stagg Street | Stratford | CT | 06615 | (203) 581-4892 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Affordable Heating and Cooling, LLC | 15 Stillwold Srive | Wethersfield | CT | 06109 | (860) 922-2477 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Aiello Plumbing & Heating | 600 Old County Circle | Windsor Locks | CT | 06096 | (888) 696-6113 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Air Connections, LLC | 1 Town Line Road Unit 1 | Plainville | CT | 06062 | (860) 747-8186 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Air Experts, Inc. | P.O. Box 647 | East Longmeadow | MA | 01085 | (413) 552-0808 | Website | Air/Duct Sealing | |
| Air Extreme, LLC | 140 Hilltop Road | Plantsville | CT | 06062 | (860) 637-0806 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Air Flo Mechanical, LLC | 8 Oakridge Drive | Colchester | CT | 06415 | (860) 989-5079 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Air On Time, LLC | 34 Soundview Avenue #1 | Old Saybrook | CT | 06475 | (860)306-9038 | Website | Air/Duct Sealing, Boilers/Furnaces, Heat Pumps | |
| Air Perfect, Inc. | 67 Southfield Avenue | Stamford | CT | 06902 | (203) 878-0878 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| Air Specialties Air Conditioning & Heating, Inc. | 25 State Street | West Haven | CT | 06516 | (203) 934-7984 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps, Plumbing | |
| Air Temp Mechanical Services, Inc. | 360 Captain Lewis Drive | Southington | CT | 06489 | (860) 953-8888 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| Air Temp Residential Heating & Cooling | 36 Holland Drive | Newington | CT | 06111 | (860) 667-7652 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical | |
| Air Unlimited, LLC | Wallingford | CT | (203) 283-3213 | |||||
| AIR, Inc. | 171 Short Beach Road | Branford | CT | 06405 | (203)303-4822 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps | |
| Aire Serv Heating & Cooling of Western Connecticut | 44 Old State Road #22 | New Milford | CT | 06776 | (860) 717-0563 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Aire Serv of North Central CT | P.O. Box 762 | East Windsor | CT | (860) 627-9455 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Aire Serv of Southwest Connecticut | 328 Derby Avenue | Derby | CT | 06418 | (203) 308-5065 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Aireze Heating and Cooling, LLC | 77 Garden Drive | Fairfield | CT | 06825 | (203) 367-9897 | Website | Boilers/Furnaces, Central Air Conditioning | |
| AirPlus, Inc. | 78 Fort Point Street | Norwalk | CT | 06855 | (203) 854-9751 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | ||
| Aitkin Mechanical Services, LLC | 83 Brookside Circle | Windsor | CT | 06095 | (860) 298-9281 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps, Plumbing | |
| Aker Mechanical Services | 50 Shingle Mill Road | West Simsbury | CT | 06092 | (860) 539-5528 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Al LeBlanc & Son, LLC | 115 Quaker Lane North | West Hartford | CT | 06119 | (860) 402-7966 | Roofing, Siding, Windows/Doors | ||
| Al's Plumbing and Heating | P.O. Box 1207 | Orange | CT | 06477 | (203) 464-1710 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Alan Powers Heating & Cooling | 94 Abbott Road | Ellington | CT | 06029 | (860) 305-3380 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Albana Roofing, LLC | 40 Union City Road | Prospect | CT | 06712 | (203) 759-1791 | Website | Insulation, Masonry, Roofing, Siding, Windows/Doors | |
| Alberca Construction Co. LLC | 79 High Ledge Circle | Manchester | CT | 06040 | (860) 783-5292 | Website | Hazardous Material Abatement, Masonry, Roofing, Siding | |
| Albert L. Munroe Jr. Plumbing & Heating, Inc. | 23 Blair Street | Milford | CT | 06460 | (203) 214-3328 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Alcraft, Inc. | 605 Washington Avenue | North Haven | CT | 06473 | (203) 980-3424 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Alicki Enterprise Heat & Cool | 190 Anderson Avenue | Milford | CT | 06460 | (203) 283-1255 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| All American Heating and Air Conditioning, Inc. | P.O. Box 6397 | Wolcott | CT | 06716 | (203) 879-4928 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| All Around Mechanical Services Inc | 311 Grove Street | New Milford | CT | 06776 | (860) 350-3639 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| All Green It, LLC | 123 Farmington Avenue, Suite 162 | Bristol | CT | 06010 | (860) 251-7854 | Website | HES audit, Solar | |
| All Makes & Heating A/C Corp. (AMHAC) | 365 White Plains Road | Eastchester | NY | 10709 | (914) 337-5555 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| All Phase Heating & Cooling Contractors, LLC | P.O. Box 577 | Moodus | CT | 06469 | (860) 873-9680 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps, Plumbing | |
| All Phase Heating and Cooling, LLC | 10 Judith Drive | Milford | CT | 06461 | (203) 927-2829 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | ||
| All Pro Electrical Services, LLC | 639 Preston Avenue | Meriden | CT | 06450 | (203) 537-1610 | Website | Electrical | |
| All Pro HVAC LLC | 40 Callender Road. Suite 3 | Prospect | CT | 06795 | (203) 527-3005 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| All Service LLC | 18 Stephanie Drive | New Milford | CT | 06776 | (860) 350-0044 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps | |
| All-Weather Mechanical, LLC | P.O. Box 22 | Bristol | CT | 06011 | (860) 584-2875 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Alpha Air Systems, Inc. | 1 Kittredge Street | Norwalk | CT | 06851 | (203) 866-6887 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| AMA Environmental, LLC | 27 Muddy Brook Road | Ellington | CT | 06029 | (860) 926-4476 | Website | Hazardous Material Abatement | |
| American ES, Inc. | 90 South end Road | New Haven | CT | 06512 | (203) 469-2200 | Website | Insulation | |
| American Fuel Oil, Inc. | 1747 Boston Tpke #A | Coventry | CT | 06238 | (860) 742-1297 | Boilers/Furnaces, Heat Pumps | ||
| American General Building Services, LLC | 3 Woodland Court | Old Mystic | CT | 06379 | (860) 514-9656 | Hazardous Material Abatement, Masonry | ||
| American Heating and Cooling, LLC | 11 Pompano Avenue | Branford | CT | 06405 | (203) 414-3354 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| American Heating Service, LLC | 64 Westridge Drive | Waterbury | CT | 06780 | (203) 756-5040 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Solar | |
| American Windows & Siding, LLC | 1131 Tolland Turnpike, Suite O | Manchester | CT | 06042 | (877) 410-1227 | Website | Insulation, Roofing, Siding, Windows/Doors | |
| AmeriGutter Seamless Gutters LLC | 6 Eleanor Road | Enfield | CT | 06082 | (860) 928-5200 | Website | Insulation, Siding | |
| Amodio & Sons Fuel & Energy Services | 1000 Boston Post Road | West Haven | CT | 06516 | (203) 934-2651 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Anchor Insulation Co. Inc. | 43 Wisconsin Avenue | Norwich | CT | 06360 | (888) 443-5548 | Website | Insulation | |
| AndAll Tuneski Mechanical LLC | 1 Birch Street | Waterford | CT | 06385 | (860) 437-8068 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Andrews Oil & Gas Services | 136 Rye Street | South Windsor | CT | 06074 | (860) 528-0766 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Andy's Home Improvement Center, LLC | 32 Wintonbury Avenue | Bloomfield | CT | 06002 | (860) 242-1163 | Masonry | ||
| Andy's Oil Service, Inc. | 329 Walnut Street | Waterbury | CT | 06704 | (203) 756-8969 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Anthem Solar Home Improvement LLC | 804 North Forms Road | Wallingford | CT | 06492 | (203) 901-6543 | Website | HES audit, Solar | |
| Apex Contracting LLC | 205 Scotland Road | Baltic | CT | 06330 | (860) 367-4207 | Masonry, Roofing, Siding, Windows/Doors | ||
| Apex Mechanical | 541 Wall Street | Hebron | CT | 06248 | (860) 228-2752 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Appleby Plumbing Co., LLC | 3 Buck Hill road | Old Saybrook | CT | 06475 | (860) 399-9101 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Aquila Heating & Cooling, LLC | 32 Sugar Plum Lane | Fairfield | CT | 06824 | (203) 334-4880 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Arbor Energy | 280 Schoolhouse Road | Cheshire | CT | 06410 | (203) 272-3250 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| ARC Mechanical Services, LLC | 1145 Wolcott Road | Wolcott | CT | 06716 | (203) 441-4103 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Around the Clock Heating and Cooling, Inc. | 16 James Street | North Haven | CT | 06473 | (203) 239-2226 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Solar, Tree Removal | |
| Artistic Plumbing | 188 Newton Street | Kensington | CT | 06037 | (860) 305-2471 | Masonry, Plumbing | ||
| Associated Mechanical | P.O. Box 941 | Winsted | CT | 06098 | (860) 302-5585 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Astacio Plumbing and Heating, LLC | 15 South Street | Norwalk | CT | 06854 | (203) 253-0769 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| At Home Restorations & Improvements LLC | 9 Spencer Court | East Hartford | CT | 06108 | (860) 805-4514 | Insulation, Masonry, Plumbing, Roofing, Siding, Windows/Doors | ||
| Atlantic Plumbing & Heating, LLC | 11 Country Brook Road | Prospect | CT | 06712 | (203) 758-0043 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Atlas Plumbing & Heating LLC | 125 Northridge Avenue | Torrington | CT | 06790 | (860) 496-9938 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Aubin and Sons Plumbing and Heating | 112 Rich Road | North Grosvenordale | CT | 06255 | (860) 935-9933 | Website | Air/Duct Sealing, Boilers/Furnaces, Heat Pumps, Plumbing | |
| Automatic Plumbing & Heating, Inc. | 105 Dickinson Drive | Shelton | CT | 06484 | (203) 513-2611 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Automatic TLC Energy | 64 Oakland Avenue | East Hartford | CT | 06108 | 860-528-4328 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| B & S Sheetmetal Co., Inc. | 176 Sandbank Road | Cheshire | CT | 06410 | (203) 272-0653 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| B.E. Stevenson Plg & Htg LLC | 432 Walnut Tree Hill Road | Shelton | CT | 06484 | (203) 929-5776 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Bailey Home Improvements | 62 Trout Stream Drive | Vernon | CT | 06066 | (860) 454-5048 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Bantam Wesson | 165 Railroad Hill Street | Bantam | CT | 06708 | (860) 567-9431 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Insulation, Plumbing, Windows/Doors | |
| Baribault Oil Co. Inc. | Oakville | CT | (860) 274-3284 | Website | Boilers/Furnaces | |||
| Barr Construction | 242 S. Windham Road | Willimantic | CT | 06226 | (860) 303-3404 | Website | Plumbing, Roofing, Siding, Windows/Doors | |
| Bartlett Brainard Products Co. | 75 Talcott Road | West Hartford | CT | 06110 | (860) 233-4475 | Website | Roofing, Siding, Windows/Doors | |
| Bath Planet of CT | 354 Woodmont Road, Unit #6 | Milford | CT | 06460 | (203) 220-6935 | Website | Insulation, Masonry, Roofing, Siding, Windows/Doors | |
| BB&C Construction, LLC | 7 Beldenwood Road | Simsbury | CT | 06070 | (860) 729-7498 | HES audit, Masonry, Roofing, Siding | ||
| BDM Mechanical LLC | 122 Oxbow Lane | Guilford | CT | 06437 | (203) 464-4206 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical | ||
| Beacon Mechanical Service, LLC | 12 Mechanicsville Road | Granby | CT | 06035 | (860) 844-0111 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Beacon Spray Foam, LLC | 982 State Street | North Haven | CT | 06511 | (203) 691-6828 | Website | Insulation | |
| Beckron Heating & Cooling LLC | 255 Columbus Avenue | Stratford | CT | 06615 | (203) 543-8751 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Beech Air | 379 Goshen Road | Torrington | CT | 06790 | (860) 496-9802 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Bella Casa Verde LLC | 295 Juniper Ridge Drive | Waterbury | CT | 06708 | (203-982-1321 | Website | Masonry, Plumbing, Roofing, Siding, Solar, Windows/Doors | |
| Bellmay Plumbing & Heating, Inc. | 44 Benton Road | Morris | CT | 06763 | (860) 567-0880 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Bender's Oil Service, Inc. | 266 Beamont Hwy | Lebanon | CT | 06249 | (860) 423-6859 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps | |
| Benedetto Heating & A.C., LLC | P.O. Box 1074 | Old Lyme | CT | 06371 | (860) 434-1574 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Benvenuti Oil Company, Inc. | 17R Boston Post Road | Waterford | CT | 06385 | (860) 443-6115 | Website | Boilers/Furnaces, Heat Pumps | |
| Berkeley Exteriors Inc. | 121 Bridgeport Avenue | Milford | CT | 06460 | (203) 877-4373 | Website | HES audit, Masonry, Roofing, Siding, Solar, Windows/Doors | |
| Bernie's Air Conditioning & Heat | 37 Griffing Avenue | Danbury | CT | 06810 | (203) 798-8232 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Berrios Siding-Roofing and General Contracting | North Haven | CT | (203) 787-5507 | Roofing, Siding | ||||
| Best Energy, LLC | 4 Mechanic Street | Pawcatuck | CT | 06379 | (860) 599-1920 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Best Home Performance of CT LLC | 77 Pierson Lane, Unit E | Windsor | CT | 06095 | (860) 373-2803 | Website | Air/Duct Sealing, Insulation, Masonry, Windows/Doors | |
| Bestech Inc. of CT | 25 Pinney Street | Ellington | CT | 06029 | 8608961000 | Website | Hazardous Material Abatement | |
| Better Building Performance, LLC. | 27 Long Hill Avenue, #A | Shelton | CT | 06484 | (203) 538-5665 | Website | HES audit, Insulation, Masonry, Siding, Windows/Doors | |
| Better Homes Siding & Improvements, LLC | 41 Lake Road | Middlefield | CT | 06455 | (860) 305-5003 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Bill Aitken Heating | P.O. Box 296 | North Stonington | CT | 06395 | (860) 306-0167 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Billy Carlson Heating & A/C, LLC | 217 Berlin Avenue | Southington | CT | 06489 | (860) 621-0556 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps | |
| Black Bear Spray Foam LLC | 27 Sharon Drive | Wallingford | CT | 06492 | (203) 747-5157 | Website | HES audit, Insulation | |
| Bob Hofmiller Heating & Cooling LLC | 62 Larkey Road | Milford | CT | 06478 | (203) 466-9149 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Boisvert Plumbing, LLC | 1165 Main Street, Suite 300 | East Hartford | CT | 06108 | (860) 216-9104 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Bosse Heating & Air Conditioning, LLC | 141 Summer Street | Plantsville | CT | 06479 | (860) 620-0687 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Botts Construction Co LLC | P.O. Box 1190 | Old Saybrook | CT | 06475 | (860) 388-0521 | Masonry | ||
| Bren-Air Heating & Cooling | 76C Finch Street | Milford | CT | 06461 | (203) 876-9535 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Bria Plumbing & Heating | 150 Victory Street | Bridgeport | CT | 06606 | (203)365-0004 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Bridgeworks Heating & Cooling LLC | P.O. Box 522 | Unionville | CT | 06085 | (860) 384-5866 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Bright Solutions, LLC | 151 New Park Avenue #3 | Hartford | CT | 06106 | (860)719-6771 | Website | HES audit, Insulation | |
| Britt-Air LLC | 8 Garden Lane | Westport | CT | 06880 | (203) 254-0500 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Briva Construction LLC | 197 Washington Avenue | New Britain | CT | 06051 | (860) 983-6552 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Masonry, Plumbing | |
| Broad Brook Heating & Cooling, Inc. | 405 Old Jewett City Road | Preston | CT | 06365 | (860) 887-0147 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Brooks Energy | 1 Canal Street | Bristol | CT | 06011 | (860) 585-1515 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Hazardous Material Abatement, Heat Pumps | |
| Brothers Oil Company, Inc. | 486 School Street | East Hartford | CT | 06108 | (860) 856-8581 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps, Plumbing | |
| Brown Roofing Co., Inc. | 469 Skokorat Road | Beacon Falls | CT | 06770 | (203) 463-4444 | Website | Roofing, Siding | |
| Brunelli Energy, LLC | 2 Rachel Drive | Bozrah | CT | 06334 | (860) 889-4442 | Website | Boilers/Furnaces, Heat Pumps | |
| Bryan's Plumbing & Heating, LLC | 83 Ellsworth Drive | Bloomfield | CT | 06002 | (860) 989-1322 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps | ||
| Builders Unlimited, LLC | 682 Shelton Street | Bridgeport | CT | 06608 | (203) 576-8939 | Masonry | ||
| Building Renewal, LLC | 45 R Ozick Drive, Suite 19 | Durham | CT | 06422 | (860) 372-4554 | Website | Masonry, Windows/Doors | |
| Bulldog Roofing LLC | 33 Rhoda Lane | Bristol | CT | 06010 | (860) 385-1786 | Website | Masonry, Roofing | |
| Butler Diversified Services, LLC | 141 Hampden Road | Stafford | CT | 06076 | (860) 458-8032 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| C & G One Hour Heating & A/C, Inc. | 977 East Main Street | Torrington | CT | 06790 | (860) 482-3400 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| C & M Construction | 30 Beacon Hill Blvd | Wolcott | CT | 06716 | (860) 582-0007 | Website | Air/Duct Sealing, Boilers/Furnaces, Heat Pumps, Masonry | |
| C & N Mechanical, Inc. | 160 Oak Street | Glastonbury | CT | 06033 | (860) 243-0877 | Website | Boilers/Furnaces, Geothermal, HES audit, Plumbing | |
| C & R Insulation, Inc. | 784 Route 32 | North Franklin | CT | 06254 | (860) 642-4226 | Website | Insulation | |
| C&S&S Home Improvement | 45 Plane Tree Road | Stratford | CT | 06614 | (203) 209-5188 | Masonry, Roofing, Siding, Windows/Doors | ||
| C-Tec Solar, LLC | 1 Griffin Road South Suite 200 | Bloomfield | CT | 06002 | (860) 580-7174 | Website | Solar | |
| C.W. Knight Oil & Heating LLC | P.O. Box 247 | N. Windham | CT | 06256 | (860) 455-0658 | Website | Boilers/Furnaces | |
| Call the Plumber, LLC | 699 Booth Hill Road | Trumbull | CT | 06611 | (203) 767-5639 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Cameron Plumbing and Heating Mechanical, LLC | 130 Marlborough Street | Portland | CT | 06480 | (860) 342-3750 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Campbell Cooling, LLC | 109 Stamm Road | Newington | CT | 06111 | (860) 957-2808 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| Candlewood Valley Heating & Air Conditioning LLC | 147 Danbury Road Unit 19 | New Milford | CT | 06776 | (860) 350-1197 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Roofing | |
| Canessa Home Improvement Services, LLC | 60 Perry Avenue | Norwalk | CT | 06850 | (203) 496-2306 | Geothermal, HES audit, Insulation, Masonry | ||
| Capitol Air | 156 Bridgeport Avenue | Milford | CT | 06460 | (203) 878-1700 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Carefree Home Pros LLC | 45 East Main Street | Avon | CT | 06001 | (860) 284-9650 | Website | Insulation, Siding, Windows/Doors | |
| Carlson Heating Air & Hot Water, Inc . | 99 Winsted Road | Torrington | CT | 06790 | (860) 489-4328 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Carmines Plumbing, Heating and Air Conditioning, LLC | 92 Sandpit Road | Danbury | CT | 06810 | (203) 791-8089 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Insulation, Plumbing | |
| Casos HVAC LLC | 100 Daly Road | East Hampton | CT | 06424 | (860) 267-5851 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Castle Windows | 109 Gaither Drive, Suite 309 | Mt. Laurel | NJ | 08054 | (800) 360-4400 | Website | Roofing, Siding, Windows/Doors | |
| Cawley Plumbing & Heating | 67 Wolf Neck Road | Stonington | CT | 06378 | (203) 536-2223 | Website | Boilers/Furnaces, Heat Pumps, Insulation, Plumbing | |
| CBS Contractors Heating & Cooling, Inc. | 22 Maple Street | Ansonia | CT | 06401 | (203) 734-8015 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Heat Pumps | ||
| CD Builders Inc | Ellington | CT | (860) 875-0067 | |||||
| Ceil Plumbing & Heating, Inc. | 266 South Broad Street | Pawcatuck | CT | 06379 | (860) 599-9000 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Celco Heating & Air Conditioning | 467 Bishop Avenue | Bridgeport | CT | 06610 | (203) 371-0055 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Certified Construction LLC | 1 Laurel Road | Rocky Hill | CT | 06067 | (860) 982-7465 | Electrical, Insulation, Masonry, Roofing, Siding, Windows/Doors | ||
| Charter Oak Envioronmental, LLC | 111 Pepes Farm Road | Milford | CT | 06460 | (860) 225-6090 | Website | Hazardous Material Abatement | |
| Charter Oak Mechanical Services, LLC | 878 Hartford Road | Manchester | CT | 06042 | (860) 432-8915 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Chernin HVAC & Refrigeration LLC | 120 Randolph Avenue | Waterbury | CT | 06710 | (781) 367-6519 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Chiarillo's HVAC & Plumbing | 191 Redstone Hill Road | Bristol | CT | 06010 | (860) 585-8139 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Chickos Energy Services | 230B Rowe Avenue | Milford | CT | 06461 | (203) 882-0177 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Chillie Willie Heating & A/C LLC | 60 Lawn Avenue #16 | Stamford | CT | 06902 | (203) 253-3235 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | ||
| Chimney Care Professional, Inc. | 29 Pleasant Valley Street | Jewett City | CT | 06351 | (860) 376-3393 | Website | Masonry | |
| CLG Electric LLC | 77 Wood Road | Somers | CT | 06071 | (860) 698-9148 | Website | Electrical | |
| Climate Partners, LLC | 922 Bridgeport Avenue | Milford | CT | 06460 | (203) 347-4024 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps, Solar | |
| Climatech Inc. | P.O. Box 308 | Wallingford | CT | 06492 | (203) 269-1600 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| Clog Master LLC | 400 Middle Street, Suite 21 | Bristol | CT | 06010 | (860) 709-8427 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| CMC Energy Services, Inc. | 60 Church Street, Suite 3D | Yalesville | CT | 06492 | (203)774-4059 | Website | HES audit, Insulation, Windows/Doors | |
| Coastal Inc. Plumbing & Heating | 14 Marion Avenue | Milford | CT | 06460 | 2038775155 | Boilers/Furnaces, Plumbing | ||
| Coastline Mechanical Services, LLC | 21 Barbara Lane | West Havent | CT | 06516 | (203) 671-1267 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Cobra Heating & Cooling, LLC | P.O. Box 5585 | Bridgeport | CT | 06610 | (203) 257-6032 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Cole Heating & Cooling, Inc. | 100 South Main Street | Seymour | CT | 06483 | (203) 888-0376 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Cole Mechanical, LLC | 42 Cedar Grove | Woodbury | CT | 06798 | (203) 948-0564 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Collins & Co. | 23 Thompson Road | East Windsor | CT | 06088 | (860) 870-9803 | Website | Insulation, Masonry | |
| Colonial Carpentry Innovations, Inc. | 566 Amherst Road | South Hadley | MA | 01075 | (413) 322-9031 | Website | Masonry | |
| Comfort Solutions Heating and Cooling, LLC | 30 Valley Forge Court | Southington | CT | 06489 | (860) 620-2786 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical | |
| Comfort Specialists Heating & Cooling, LLC | 35 Old Town Hwy | Cheshire | CT | 06512 | (203) 272-3855 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Comfort Zone Heating & Coolin LLC | 30 Chimney Road | Watertown | CT | 06516 | (860) 274-1974 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | ||
| Comforttech Heating | 22 E. Market Street | Rhinebeck | NY | 12572 | (845) 876-6889 | Website | Roofing, Siding | |
| Complete Climate Control LLC | 13 Glendale Road | Enfield | CT | 06082 | (860) 978-5085 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Conditioned Air Systems, Inc. | 60 Connolly Pkwy Building 9 | Hamden | CT | 06515 | (203) 230-2121 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | ||
| Connecticut Air Systems | 270 Rowe Avenue | Milford | CT | 06461 | (203) 877-4070 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Connecticut Cleaning & Heating Equipment Inc. | 19 Oakwood Road | Simsbury | CT | 06070 | (860) 651-9116 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit | |
| Connecticut Cooling and Heating, Inc. | 244 Woodland Avenue | Bloomfield | CT | 06002 | (860) 242-6295 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps, Roofing | |
| Connecticut Environment Control, LLC | 61 Pritchett Drive | Westbrook | CT | 06498 | (860) 399-6000 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Connecticut Heating & Cooling, LLC | P.O. Box 380057 | East Hartford | CT | 06138 | (860) 838-4257 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit | |
| Connecticut Home Services, Inc. | PO Box 270212 | West Hartford | CT | 06127 | (860) 529-4000 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Insulation, Roofing, Siding | |
| Connecticut Home Solutions, LLC | 1A, 101 N Plains Industrial Road | Wallingford | CT | 06492 | (800) 621-2965 | Website | Air/Duct Sealing, Insulation | |
| Connecticut Hydronics LLC | Naugatuck | CT | (203) 233-0797 | Geothermal | ||||
| Connecticut Roofcrafters LLC | P.O. Box 524 | West Haven | CT | 06516 | (203) 745-5028 | Website | Roofing | |
| Connecticut Wells & Geothermal Services, Inc. | 49 Hard Hill Road North | Bethlehem | CT | 06751 | (203) 266-5272 | Website | Geothermal | |
| Contracting USA, LLC | 100 Cold Spring Road #318A | Rocky Hill | CT | 06067 | (860) 474-5144 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Masonry, Plumbing, Roofing, Windows/Doors | |
| Controlled Temperatures, Inc | 29 Parker Avenue | Stamford | CT | 06906 | (203) 348-9141 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Cool Heat Mechanical, Inc. | 117 Kimberly Road | East Granby | CT | 06026 | (860) 883-1837 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | ||
| Copper Valley Heating &Cooling, LLC | 78-C Golden Street | Meriden | CT | 06450 | (203) 599-0401 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Cor Electric LLC | 611 Saddle Ridge Road | Orange | CT | 06477 | (203) 410-8517 | Website | Electrical | |
| Cornwall Plumbing & Heating, LLC | 366 Furnace Brook Road | Cornwall Bridge | CT | 06754 | (860) 672-6350 | Website | Boilers/Furnaces, Heat Pumps, Plumbing, Solar | |
| Countywide Mechanical Services LLC | 31 Deming Road | Berlin | CT | 06037 | (860) 316-2299 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Cousins Oil Co, Inc. | 43 West Washington Street | Bristol | CT | 06010 | (860) 584-1000 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| Craftwork Contractors | 251 Ridgefield Street | Hartford | CT | 06112 | (860) 726-3820 | Website | Roofing, Siding, Windows/Doors | |
| Creative Building | 5 North Road | Bethel | CT | 06801 | (203) 994-0430 | Masonry | ||
| Cromwell Energy, Inc. | 308 Main Street | Cromwell | CT | 06416 | (860) 635-1234 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Cronus Construction, LLC | 70 Grove Hill Street | New Britain | CT | 06051 | (860) 888-2788 | Masonry | ||
| CT Asbestos Abatement LLC | 47 Linden Street | West Haven | CT | 06516 | (203) 376-7043 | Website | Hazardous Material Abatement | |
| CT Electrical Services / CT Solar Services | 16 Pamanata Meadows | Beacon Falls | CT | 06403 | (203) 723-9052 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Insulation, Masonry, Plumbing, Roofing, Siding, Solar | |
| CT Professional Painting LLC | 117 Pilgrim Drive | Windsor | CT | 06095 | (860) 402-7453 | Masonry, Roofing, Siding, Windows/Doors | ||
| CT Weatherproof Insulation LLC | 115 Bruce Avenue | Stratford | CT | 06615 | (203) 813-1597 | Website | HES audit, Insulation | |
| Curley's Fuel | 55 Tunxis Street | Windsor | CT | 06095 | (860) 688-8870 | Boilers/Furnaces | ||
| Currie's Plumbing Heating & Cooling, Inc. | 426 Salem Turnpike | Bozrah | CT | 06334 | (860) 859-3533 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps, Plumbing | |
| Cusson Sash Company, Cusson Realty, LLC | 128 Addison Road | Glastonbury | CT | 06003 | (860) 659-0354 | Website | Windows/Doors | |
| Custom Air Solutions, LLC | 153 Stone Hill Drive | Rocky Hill | CT | 06067 | (860) 921-7853 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Custom Air Systems, Inc. | 765 Housatonic Avenue | Bridgeport | CT | 06604 | (203) 333-1906 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Custom Ventilation LLC | 76 Lustig Road | Willington | CT | 06279 | (860) 429-2805 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| D & D Heating & Air Conditioning, LLC | 3 Peerless Way, Suite Q | Somers | CT | 06082 | (860) 698-9696 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal | |
| D & H Mechanical Service LLC | 163 Shenipsit Lake Road | Tolland | CT | 06084 | (860) 983-0802 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Dal Fuel Oil Co., LLC | 450 Rubber Avenue | Naugatuck | CT | 06770 | (203) 758-8682 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Dal Remodeling LLC | 89 Loomis Street | Manchester | CT | 06040 | (860) 432-5850 | Insulation, Masonry, Roofing, Siding, Windows/Doors | ||
| Dalia Home Improvement Corporation | Bridgeport | CT | (203) 540-2387 | |||||
| Dalling Heating & Air Conditioning, LLC | 149 Newgate Road | Oxford | CT | 06478 | (203) 231-3943 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | ||
| Daniel J. Symolon, LLC | Burlington | CT | (860) 916-0277 | |||||
| Daniels Energy | 8 High Street | Portland | CT | 06480 | (860) 813-9125 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| DDLC Energy | 410 Bank Street | New London | CT | 06320 | 866-297-8038 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Dean Russo | 59 Middle Road | Guilford | CT | 06437 | (203) 453-9140 | Central Air Conditioning, Electrical | ||
| DeBow Mechanical Services, LLC | P.O. Box 290144 | Wethersfield | CT | 06129 | (860) 956-8716 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Masonry, Plumbing, Solar | |
| DEF Services Group, Ltd | 1171 Voluntown Road | Griswold | CT | 06351 | (860) 376-4896 | Website | Electrical, Masonry, Plumbing | |
| Degree Heating & Cooling, Inc. | 160 Oak Street Suite 508 | Glastonbury | CT | 06033 | (860)633-6122 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Degree Heating, AC & Mechanical Services | West Simsbury | CT | (860) 408-1113 | Boilers/Furnaces, Central Air Conditioning | ||||
| Deitch Energy, LLC | 40 Woodland Street (Rear) | Hartford | CT | 06105 | (860) 728-5431 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Insulation, Plumbing | |
| Demarse Electric, Inc. | 64 Main Street | Queensbury | NY | 12804 | (518) 309-2780 | Website | Electrical, Roofing, Solar | |
| Densmore Oil Company | 1 Water Street | Mystic | CT | 06355 | (860) 536-7927 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| DePco Mechanical LLC | 48 Roseleah Avenue | Plainville | CT | 06062 | (860) 747-0079 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, Plumbing | |
| Dependable Energy, Inc. | 9 Gramar Avenue | Prospect | CT | 06712 | (203) 758-5831 | Website | Boilers/Furnaces, Geothermal, HES audit, Heat Pumps | |
| Designed Air Systems, LLC | 18 Staeth Road | East Hampton | CT | 06424 | (860) 839-2021 / (860) 992-5137 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Desirable Heating and Cooling | 50 Remer Street | Bridgeport | CT | (203) 673-5152 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |||
| DiGiorgi Roofing & Siding, Inc. | 33 Lancaster Drive, P.O. Box 126 | Beacon Falls | CT | 06403 | (203) 723-6880 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| DiMartino Home Improvement Inc. | 323 Washington Avenue, 4 Rear | North Haven | CT | 06473 | (203) 239-0558 | Website | Masonry, Siding, Windows/Doors | |
| Direct Energy Solar | 7101 Riverwood Drive | Columbia | MD | 21046 | (410) 271-8194 | Website | Solar | |
| DJ Hall Roofing, LLC | 69 Ginger Lane | Torrington | CT | 06790 | (860) 626-5300 | Website | Roofing | |
| DM Remodeling | 290 Ohio Avenue | Groton | CT | 06340 | (860) 213-3459 | Website | Insulation, Masonry, Roofing, Siding, Windows/Doors | |
| Don's Heating & Cooling Solutions, LLC | 4 Elm Street | Ellington | CT | 06029 | (860) 872-0586 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | ||
| Douglas Mechanical Services, Inc. | 820 Four Rod Road | Berlin | CT | 06037 | (860) 357-4952 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Douglas Plumbing, Heating & A/C LLC | 27 Roma Drive | Farmington | CT | 06032 | (860) 677-4522 | Boilers/Furnaces, Central Air Conditioning, Plumbing | ||
| Dr. Energy Saver | 800 Prospect Hill Road, Suite E | Windsor | CT | 06095 | (860) 219-0499 | Website | HES audit, Insulation, Windows/Doors | |
| Dr. Energy Saver | 60 Silvermine Road | Seymour | CT | 06483 | (800) 541-0487 | Website | Air/Duct Sealing, Central Air Conditioning, Insulation, Masonry | |
| Dr. Energy Saver LLC CT MA | P.O. Box 270 | East Granby | CT | 06026 | (860) 653-9327 | Website | HES audit, Insulation | |
| Ductworks Heating & A/C Services | 175 Spring Street | Southington | CT | 06489 | (860) 621-6295 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Duncklee, Inc. | 296 Taugwonk Road | Stonington | CT | 06378 | (860) 535-2552 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Dutch Oil Co, Inc. | 35 William F. Palmer Road | Moodus | CT | 06469 | (860) 873-3876 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Dynamic Building & Energy Solutions | 183 Providence New London Tpke | North Stonington | CT | 06359 | (860) 535-8118 | Website | Insulation, Masonry, Siding, Windows/Doors | |
| Dynamic Contracting Group, LLC | 9 Hewlett Street | Waterbury | CT | 06710 | (203) 578-7225 | Masonry, Roofing, Siding, Windows/Doors | ||
| Dynamic Mechanical Heating & Air Conditioning LLC | 230 S Washington Street, #18 | Plainville | CT | 06062 | (860) 589-8367 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Dzen Residential Roofing LLC | 105 Edwin Road | South Windsor | CT | 06074 | (860) 289-1663 | Website | Roofing, Siding | |
| E & M Heating & Cooling, LLC | 70 Bluff Avenue | West Haven | CT | (203) 915-3672 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |||
| E.J. Chasse Home Repairs & Improvements | 15 Sunset Terrace | Portland | CT | 06480 | (860) 342-1942 | Masonry, Plumbing, Roofing, Siding, Windows/Doors | ||
| Earthlight Technologies, LLC | Ellington | CT | (860) 871-9700 | Website | Solar | |||
| East Coast Insulation, LLC | 12 Innes Avenue | Thomaston | CT | 06787 | (203) 982-1188 | Insulation | ||
| East Coast Mechanical, Inc. | 1187 Highland Avenue | Cheshire | CT | 06410 | 2032726676 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| East Coast Wall Systems, LLC | 91 Bysiewicz Drive | Middletown | CT | 06457 | (860) 296-0728 | Website | Masonry | |
| East Guilford Construction, Inc | 148 Mungertown Road | Madison | CT | 06443 | (203) 376-1272 | Masonry | ||
| East Hartford Heating and Cooling, LLC | 366 Tolland Street | East Hartford | CT | 06108 | (860) 290-9625 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| East River Energy, Inc. | 401 Soundview Road | Guilford | CT | 06437 | (203) 453-1200 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Eastern CT Solar LLC | 689 Pendleton Hill Road | North Stonington | CT | 06359 | (860) 389-6736 | Website | Solar | |
| Eastern Fuel Corporation | Hamden | CT | (203) 248-2111 | Website | Boilers/Furnaces | |||
| Eastern Mechanical Services, Inc. | 3 Starr Street | Danbury | CT | 06810 | (203) 792-7668 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, Heat Pumps | |
| Eastside Electric Inc. | 178 Birge Park Road | Harwinton | CT | 06791 | (860) 485-0700 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical | |
| ECO Energy Guard LLC | 63 Coldspring Road | Avon | CT | 06001 | (860) 690-5465 | Website | Insulation | |
| Eco Home Comfort Systems, LLC | 217 North Street | Goshen | CT | 06756 | (860) 644-3845 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| EcoLogic Energy Solutions LLC | 48 Union Street | Stamford | CT | 06907 | (203) 889-0505 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit | |
| EcoSmart Home Services, Inc. | 105A Clark Dr. | East Berlin | CT | 06023 | (860) 828-6626 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps, Insulation, Solar | |
| ECS Aeroseal LLC | 519 Heritage Road, Suite 1B | Southbury | CT | 06488 | (203) 262-1064 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit | |
| Ed Blesso Plumbing & Heating, Inc. | 410 Main Street | Pine Meadow | CT | 06061 | (860) 690-7190 | Boilers/Furnaces, Heat Pumps | ||
| Eddie's Quality Home Improvements | 102 Gilbert Avenue | Rocky Hill | CT | 06067 | (860) 796-9796 | Masonry | ||
| Eden Contractors LLC | 453 Tolland Street | East Hartford | CT | 06108 | (617) 318-7339 | Insulation, Masonry, Roofing, Siding | ||
| Edgerton, Inc. | 786 Main Street | Monroe | CT | 06468 | (203) 673-6360 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Effective Plumbing, LLC | 12 Winfield Street | Norwalk | CT | 06855 | (203)855-9465 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Ehman Mechanical Services, LLC | 48 Rockwood Avenue | Ansonia | CT | 06401 | (203) 410-8729 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Elite Heating and Cooling, LLC | 250 Silver Hill Road | Derby | CT | 06415 | (203) 516-5595 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Elite Systems, LLC | 29 Woodside Way | Bristol | CT | 06010 | (860) 280-5719 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Elm City Energy Solutions, LLC | 319 Peck Street, Bldg 2, Ste H | New Haven | CT | 06513 | (203) 387-2885 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Insulation, Plumbing, Roofing, Siding | |
| ENCON, Inc. | 1265 Woodend Road | Stratford | CT | 06615 | (203) 375-5228 | Website | Boilers/Furnaces, Central Air Conditioning, Solar | |
| Energy Air | 204 Sperry Drive | Guilford | CT | 06437 | (203) 453-8354 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps | |
| Energy Efficiencies Solutions LLC | 398 Palisado Avenue | Windsor | CT | 06095 | (860) 580-9076 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Insulation, Windows/Doors | |
| Energy ESC, LLP | 119 Bolton Street | Manchester | CT | 06042 | (860) 365-9678 | Website | Air/Duct Sealing, Insulation, Windows/Doors | |
| Energy Nerds LLC | 296 Chapman Street | New Britain | CT | 06051 | (860) 837-1598 | Air/Duct Sealing, HES audit, Insulation | ||
| Energy Resource Group Technologies, Inc | 1831 Middletown Avenue | Northford | CT | 06472 | (203) 484-2594 | Website | Air/Duct Sealing, HES audit, Insulation | |
| Energy Saver & Convenience LLC | 21 West Wood Drive | Moosup | CT | 06469 | (860) 305-7443 | Insulation, Roofing, Siding, Windows/Doors | ||
| Energy Spray Systems LLC | 9 Cummings Avenue | Stamford | CT | 06902 | (203) 536-3388 | Website | Insulation | |
| Energy Unlimited, LLC | 83 Lookout Mountain Drive | Manchester | CT | 06040 | (860) 643-8334 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| Energy Vectors, LLC | 386 Main Street | Manchester | CT | 06040 | (860) 653-6318 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Environmental Services, Inc. | 90 Brookfield Street | South Windsor | CT | 06074 | (860) 528-9500 | Website | Hazardous Material Abatement | |
| Environmental Systems Corporation | 18 Jansen Court | West Hartford | CT | 06110 | (860) 953-8800 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Essex Property Management, LLC | 442-444 Farmington Avenue | Hartford | CT | 06105 | (860) 525-9999 | Masonry | ||
| Evergreen Energy, LLC | 373 Wedgewood Road | Southington | CT | 06489 | (860) 628-8151 | Website | Geothermal, Solar | |
| Exact Carpentry | 169 Goose Lane | Tolland | CT | 06084 | (860) 803-1494 | Masonry, Plumbing, Roofing, Siding, Windows/Doors | ||
| Exteriors of CT, LLC | 22 Kreiger Lane #22 | Glastonbury | CT | 06033 | (860) 657-2038 | Website | Roofing, Siding, Windows/Doors | |
| F & A Contracting LLC | 34 Tamarack Lane | Goshen | CT | 06756 | (203) 948-1905 | Masonry | ||
| F. Panza Company LLC | 275 Forest Road, Suite 1 | West Haven | CT | 06516 | (203) 934-1000 | Masonry | ||
| F.F. Hitchcock Co., Inc. | 264 Sandbank Road | Cheshire | CT | 06410 | (203) 272-5400 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| F.N. Builders, Inc. | P.O. Box 741 | Glastonbury | CT | 06033 | (860) 633-8388 | Website | Masonry, Plumbing, Roofing, Siding, Windows/Doors | |
| Fahrenheit Mechanical Services, Inc. | 56 Depot Street | Broad Brook | CT | 06016 | (860) 623-1991 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Fairfield County Exteriors LLC | 44 Ryegate Terrace | Stratford | CT | 06615 | (203) 375-9700 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Fairfield County Restoration | 26 Fitch Street | Norwalk | CT | 06855 | (203) 838-5858 | Website | Masonry, Roofing, Windows/Doors | |
| Father and Son Masonry | 8 Colonial Drive | Waterford | CT | 06385 | (203) 437-6390 | Masonry | ||
| Fazzino Plumbing & Heating, Inc. | 485 Cherry Street | Naugatuck | CT | 06770 | (203) 490-4637 | Website | Boilers/Furnaces, Heat Pumps | |
| Finestra Rossa Windows | 485 New Park Avenue | West Hartford | CT | 06110 | (860) 986-7277 | Website | Roofing, Windows/Doors | |
| Finman Windows, LLC | 4 Eastview Drive | Farmington | CT | 06032 | (860) 677-9300 | Website | Windows/Doors | |
| Fire & Ice Heating & Air Conditioning | P.O. Box 42 | North Granby | CT | 06060 | (860) 982-0638 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Fire Finesse, LLC | 644 Silas Deane Hwy | Wethersfield | CT | 06109 | (860) 529-3473 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Masonry | |
| Firehouse Discount Fuels LLC | 227 Speilman Highway | Burlington | CT | 06013 | (860) 485-5224 | Website | Boilers/Furnaces, Heat Pumps | |
| First Choice Home Services, LLC | 2 Tetrault Road | Stafford Springs | CT | 06076 | (860) 684-3006 | Website | Boilers/Furnaces, Heat Pumps, Masonry, Plumbing | |
| Fitzgerald & Wood Inc. | 85 Rogers Street | Branford | CT | 06405 | (203) 488-2553 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Fitzpatrick Heating & A/C, LLC | 67 Hayden Hill Rd | Haddam | CT | 06438 | (860) 345-7466 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Flue Doctor Chimney Service LLC | 8 Cheney Road | Pomfret Center | CT | 06259 | (860) 974-3139 | Website | Masonry | |
| Foleys Plumbing & Heating, LLC | P.O. Box 2966 | Danbury | CT | 06813 | (203) 797-1626 | Website | Air/Duct Sealing, Boilers/Furnaces, Heat Pumps, Plumbing | |
| Fontaine Mechanical Heating & A/C | P.O. Box 609 | Bristol | CT | 06011 | (860) 589-4900 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| For U Builders Group, LLC | 45 Hilltop Road | Morris | CT | 06763 | (914) 582-3169 | Website | Insulation, Masonry, Windows/Doors | |
| Foremost Mechanical Services, LLC | 306 Scantic Road | East Windsor | CT | 06088 | (860) 758-4218 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Forsley Enterprises, LLC | 3 Emily Drive | Vernon | CT | 06066 | (860) 268-2500 | Website | Insulation, Masonry, Roofing, Siding | |
| Four Seasons Chimney & Roofing, LLC | 19 Walnut Hill road | Watertown | CT | 06787 | (866) 747-7778 | Website | Masonry, Roofing, Siding | |
| Fox Heating Services, Inc. | 37 Westford Avenue | Tolland | CT | 06076 | (860) 684-9113 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Fritz's Heating and Cooling, LLC | 1370 Park Avenue | Bridgeport | CT | 06604 | (203) 372-9460 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Fusco Bros. Oil | 556 Elm Street, Ste 101 | Windsor Locks | CT | 06096 | (860) 688-5234 | Boilers/Furnaces, Central Air Conditioning | ||
| G & G Mechanical | 22 Barsalou Avenue | Waterbury | CT | 06705 | (203) 565-7879 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| G & S Heating and Cooling | 45 Pleasant View Avenue | Bridgeport | CT | 06606 | (203) 218-3325 | |||
| G.J. Giacco, Inc. | 10 Cooper Street | Meriden | CT | 06450 | (203) 235-0840 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| G.M. Industries, Inc. | 350 Babcock Road | Tolland | CT | 06084 | (860) 872-4717 | Website | HES audit | |
| Gary Lopiano Plumbing Heating & Remodeling, LLC | 100 Blue Ridge Drive | Stamford | CT | 06903 | (203) 355-0776 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| General Builders & Remodelers | 87 O'Connell Road | Colchester | CT | 06415 | (860) 885-4578 | Insulation, Masonry, Roofing, Siding, Windows/Doors | ||
| General Oil of Quaker Hill, Inc. | P.O. Box 465 | Quaker Hill | CT | 06375 | (860) 443-1306 | Website | Boilers/Furnaces, Heat Pumps | |
| Geo Source Systems, LLC | 21 South End Plaza | New Milford | CT | 06776 | (860) 799-7481 | Website | Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| Giordano's Heating & Air Conditioning Co., LLC | 13 Roosevelt Drive | Derby | CT | 06418 | (203) 734-7648 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Glasco Heating & Air Conditioning, Inc. | 56 Glendale Road | South Windsor | CT | 06074 | (860) 289-5509 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Glass, Glazing & Home Improvement | 132 Main Street | New Haven | CT | 06512 | (203) 468-0964 | Website | Windows/Doors | |
| Glastonbury Burner & Boiler | P.O. Box 1403 | Glastonbury | CT | 06033 | (860) 659-4120 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| GMAC Plumbing & Heating LLC | 17 Country Lane | Vernon | CT | 06066 | (860) 543-2730 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| GMS Home Improvements | 219 Poole Road | Suffield | CT | 06078 | (860) 930-0699 | Masonry | ||
| Good Life Energy Savers, LLC | 50 Beaver Brook Road, Suite 7 | Danbury | CT | 06810 | (203) 403-6351 | Website | HES audit, Insulation | |
| Goulart Construction, Inc. | 15 Lori Lynn Circle | Newtown | CT | 06470 | (203) 426-7977 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Grade A Home Improvement, LLC | Middlefield | CT | (860) 874-4848 | Website | ||||
| Grady Construction LLC | 16 Beverly Road | Vernon Rockville | CT | 06066 | (860) 478-2569 | Website | Roofing, Siding, Windows/Doors | |
| Green Built Connecticut | 42 Dora Street #2 | Stamford | CT | 06905 | (203) 542-5515 | Website | Air/Duct Sealing, Insulation | |
| Green Earth Energy Photovoltaic | 2 North Road, Bldg 3, Suite 1 | East Windsor | CT | 06088 | (860) 808-7115 | Website | Solar | |
| Green Energy Saver, LLC | 3 Lovely Street | Canton | CT | 06019 | (860) 693-8289 | Website | Insulation | |
| Green Star Energy Solutions, LLC | P.O. Box 5144 | Brookfield | CT | 06804 | (203) 744-1144 | Website | Air/Duct Sealing, Heat Pumps, Insulation | |
| Greg Swanson | 112 Mallard drive | Avon | CT | 06001 | (860) 992-4548 | Insulation, Masonry, Plumbing, Siding, Windows/Doors | ||
| Greg's Plumbing & Heating, LLC | 94 Thames Street | New London | CT | 06320 | (860) 460-0670 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Greystone Home Services, LLC | 91 Manor Circle | East Hartford | CT | 06118 | (860) 748-6830 | Website | Insulation, Windows/Doors | |
| Guarantee Mechanical Services, Inc. | P.O. Box 340/47 Plantation Road | Broad Brook | CT | 06016 | (860) 627-9368 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | ||
| Guaranteed Mechanical Services, Inc. | P.O. Box 340 | Broad Brook | CT | 06016 | (860) 627-9368 | Boilers/Furnaces, Central Air Conditioning, Plumbing | ||
| Gulick Building & Development, LLC | 1069 Connecticut Avenue, Bldg 4, Ste 102 | Bridgeport | CT | 06607 | (203) 583-4567 | Website | Insulation, Windows/Doors | |
| Gutowski Central Heating | 620 East Main Street | New Britain | CT | 06051 | (877) 229-8529 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Guys Heating & Cooling | 855 Northfield Road | Watertown | CT | 06795 | (860) 417-6553 | Website | Boilers/Furnaces, Central Air Conditioning | |
| H. Hulse Heating & Air Conditioning | 294 Benton Street | Stratford | CT | 06615 | (203) 380-2692 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| H2O Services, LLC | 252 Courtland Avenue | Stamford | CT | 06906 | (203) 273-0764 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Hanco Plumbing & Heating, LLC | 60 Industrial Park Rd W Ste 7G | Tolland | CT | 06084 | (860) 872-4706 | Boilers/Furnaces, Plumbing | ||
| Handyman Express Energy Solutions, LLC | 1414 Barnum Avenue | Stratford | CT | 06614 | (203) 307-5395 | Website | HES audit | |
| Harmony Home Improvement | 2389 Main Street | Glastonbury | CT | 06033 | (860)707-6040 | Website | Roofing, Siding, Windows/Doors | |
| HARP Home Services LLC | 483 Spring Street | Windsor Locks | CT | 06096 | (860) 623-4350 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Haz-Pros, Inc. | 125 Brook Street | West Hartford | CT | 06110 | (800) 828-6343 x7 | Website | Hazardous Material Abatement | |
| Hefferon Heating & Cooling LLC | 37A Padanaram Road | Danbury | CT | 06811 | (203) 790-8826 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps | |
| Hellas Air Temp., Inc. | 52 Connecticut Avenue | Norwalk | CT | 06850 | (203) 246-1783 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Heritage Home Restoration LLC | 20 Jewell Street | Cornwall | CT | 06753 | (860) 994-2534 | Website | Masonry | |
| High Performance Energy Solutions, LLC | 21 Cedar Vale Drive | New Milford | CT | 06776 | (203) 297-2529 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| Highland Window Company, LLC (The) | 998 Farmington Avenue | West Hartford | CT | 06107 | (860) 233-7100 | Website | Siding, Windows/Doors | |
| Hillcrest Heating & Air Conditioning | 4 Addison Street | Ansonia | CT | 06401 | (203) 735-1847 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| HM Construction Services LLC | 2490 Black Rock Turnpike | Fairfield | CT | 06825 | (203) 373-1362 | Roofing, Siding, Windows/Doors | ||
| Hoffman Energy | 56 Quarry Road | Trumbull | CT | 06611 | (800) 637-2239 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, HES audit | |
| Homa Home Improvement, LLC | 135 Fairchild Avenue | Fairfield | CT | 06825 | (203) 368-3255 | Website | Masonry, Roofing, Siding, Solar, Windows/Doors | |
| Home Comfort Heating and Cooling Solutions, LLC | P.O. Box 120120 | East Haven | CT | 06512 | (203) 290-1005 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Home Comfort Practice, LLC | 165 Benton Street | Stratford | CT | 06615 | (203) 450-3000 | Website | Air/Duct Sealing, HES audit, Insulation, Roofing, Siding, Windows/Doors | |
| Home Doctor of America | 15 New Lebbon Road | Sandy Hook | CT | 06482 | (203) 364-7390 | Website | Insulation, Siding, Windows/Doors | |
| Home Heating & Air Conditioning, LLC | 8 Coyle Drive | West Haven | CT | 06516 | (203) 932-5484 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Homeguard Environmental | 48 Union Street | Stamford | CT | 06906 | (203) 323-8000 | Website | Hazardous Material Abatement | |
| Homestead Fuel, Inc. | 100 West Road, Unit 2 | Ellington | CT | 06029 | (860) 870-8700 | Website | Boilers/Furnaces, Hazardous Material Abatement, Heat Pumps | |
| Horvath Plumbing and Heating, LLC | 17 Dannell Drive | Stamford | CT | 06905 | (203) 561-1150 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| House Bros Plumbing Contractors, Inc. | 74 Kreiger Lane | Glastonbury | CT | 06033 | (860) 659-0055 | Website | Boilers/Furnaces, Plumbing | |
| HR Heating Services, LLC | 83 William Street | East Hartford | CT | 06108 | (860) 573-2403 | Boilers/Furnaces, Central Air Conditioning, Plumbing | ||
| Hurlburt's Plumbing and Heating LLC | 2590 Whitney Avenue | Hamden | CT | 06518 | (203) 915-3252 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Husky Fuel | 62 Larkey Road | Oxford | CT | 06478 | (203) 783-0783 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Hydro Dynamic Engineering, LLC | 547 Shuttle Meadow Road | Southington | CT | 06489 | (860) 620-7452 | Geothermal, Heat Pumps | ||
| Hygrade Gas Service, Inc. | 19 Middle River Drive | Stafford Springs | CT | 06076 | (860) 749-8035 | Website | Boilers/Furnaces, Heat Pumps | |
| Hygrade Mechanical Services LLC | P.O. Box 270541 | West Hartford | CT | 06117 | (860) 918-3068 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Hytek Plumbing & Heating LLC | 241 Krug Road | Preston | CT | 06365 | (860) 389-1122 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Imperial Plumbing Co. | 648 Sullivan Avenue | South Windsor | CT | 06074 | (860) 291-0115 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Incredible Oil, LLC | 5 Barker Drive | Wallingford | CT | 06492 | (203) 265-4328 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Independent Insulation | 63 Yale Drive | Enfield | CT | 06083 | (860) 899-9041 | Website | Insulation | |
| Independent Mechanical Inc. | P.O. Box 304 | Uncasville | CT | 06382 | (860) 949-4401 | Air/Duct Sealing, Boilers/Furnaces, Heat Pumps | ||
| Indoor Comfort Heating & Cooling LLC | 215 Eddon Drive | East Haven | CT | 06512 | (203) 507-8411 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Innovative Heating & Cooling LLC | 301 Brewster Road Unit 17 | Milford | CT | 06460 | (203) 283-7272 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Insulation Solutions of CT, LLC | 59 Burnside Avenue, Suite 2 Front | East Hartford | CT | 06108 | (860) 568-8111 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Insulation, Siding, Windows/Doors | |
| Integrity Home Services LLC | P.O. Box 1485 | Fairfield | CT | 06825 | (203) 403-2111 | Website | Roofing | |
| Integrity HVAC Systems LLC | 21 Hillview Heights | Griswold | CT | 06351 | (860) 949-5436 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Ireland Oil Co., Inc. | 171 Union Street | Vernon | CT | 06066 | (860) 875-1906 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Ivy Roofing Contractor LLC | 1654 Center Groton Road | Ledyard | CT | 06339 | (860) 625-2727 | Website | Roofing, Siding, Windows/Doors | |
| J & A Waterville Oil Service Inc. | 943 New Haven Road | Naugatuck | CT | 06770 | (203) 729-5216 | Website | Boilers/Furnaces, Heat Pumps | |
| J & M Plumbing and Heating LLC | 35 High Bridge Road | Bantam | CT | 06750 | (860) 567-0508 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| J & R Roofing LLC | 19 Soundview Avenue | Norwalk | CT | 06854 | (203) 505-6727 | Roofing, Siding | ||
| J & S Remodeling, LLC | 232 Marcia Drive | Bristol | CT | 06010 | (860) 919-6725 | Windows/Doors | ||
| J K Remodeling & Construction LLC | 128 Washington Avenue Ext | Torrington | CT | 06790 | (860) 459-8100 | Masonry, Roofing, Siding | ||
| J. Gasper Heating and Air Conditioning | 160 Wedgewood Drive | Torrington | CT | 06790 | (860) 496-0101 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| J. Marasco Heating & Cooling LLC | 11 Anderson Road | Norwalk | CT | 06850 | (203) 866-4421 | Boilers/Furnaces, Central Air Conditioning | ||
| J. Signor Exteriors, LLP | 125 Foxcroft Road | West Hartford | CT | 06119 | (860) 232-3227 | Website | Roofing, Siding, Windows/Doors | |
| J. Thurston Fuel LLC | 130 Washington Avenue | Waterbury | CT | 06708 | (203) 753-4328 | Website | Air/Duct Sealing, Boilers/Furnaces, Heat Pumps | |
| J.A.B. Remodeling LLC | 27 Margaret Lane | Canaan | CT | 06018 | (860) 671-0335 | Roofing, Windows/Doors | ||
| J.C. Tonnotti Window Co. Inc. | 205 Bristol | Southington | CT | 06489 | (860) 621-1642 | Website | Roofing, Siding, Windows/Doors | |
| J.P. Dunn Heating & Cooling, LLC | 701 Northfield Road | Northfield | CT | 06778 | (860) 283-1167 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| J.P. Spinella Heating and Cooling | 247 Woodtick Road | Wolcott | CT | 06716 | (203) 982-3179 | Website | Boilers/Furnaces, Central Air Conditioning | |
| J.T. Burke & Sons, Inc. | 254 Burnside Avenue | East Hartford | CT | 06108 | (860) 289-9381 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| James Carboni Plumbing & Heating Inc. | 574 Route 32 | North Franklin | CT | 06254 | (860) 642-7847 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| James Onze Plumbing & Heating | 230-A Rowe Avenue | Milford | CT | 06461 | (203) 876-7875 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Jasinski Fuel Service, LLC | 146 Campville Hill Rd | Harwinton | CT | 06791 | (860) 605-9039 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Jays Sheet Metal | 364 Colonel Ledyard Hwy | Ledyard | CT | 06339 | (860) 237-0234 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| JC Construction & Renovations LLC | 45 Martins Mano | Manchester | CT | 06040 | (860) 416-6055 | Insulation, Masonry, Plumbing, Roofing, Siding, Windows/Doors | ||
| JD Solar Solutions LLC | 81B Johnson Road | Bolton | CT | 06043 | (860) 717-0786 | Website | Roofing, Solar | |
| JD's Home Improvements | 1427 Chamberlain Hwy | Berlin | CT | 06032 | (860) 614-2568 | Roofing, Siding, Windows/Doors | ||
| JDL Air Systems LLC | 3 Earl Street | Norwalk | CT | 06859 | (203) 866-2259 | Boilers/Furnaces, Central Air Conditioning | ||
| Jeff Nadeau Const. | 28 Stanley Drive | South Windsor | CT | 06074 | (860) 944-4442 | |||
| JEM Plumbing & Heating, Inc. | 164 Bender Road | Hamden | CT | 06518 | (203) 287-5636 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Jennings Propane Company | 30 East Franklin Street | Danbury | CT | 06810 | (203) 790-1406 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Jim Pescatore Home Improvement, LLC | 126 Winsted Road | Torrington | CT | 06790 | (860) 866-4200 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Jim's Plumbing & Heating, LLC | 777 Enfield Street | Enfield | CT | 06082 | (860) 745-5271 | Boilers/Furnaces, Plumbing | ||
| Jimco Windows | 1636 Baldwin Street | Waterbury | CT | 06706 | (203) 756-7373 | Windows/Doors | ||
| Joe's Home Improvement, LLC | 13 Prospect Hill Drive | East Windsor | CT | 06088 | (860) 904-3845 | Roofing, Siding, Windows/Doors | ||
| John C. Fiderio & Sons, Inc. | 687 Broad Street | Meriden | CT | 06450 | (203) 237-0350 | Website | Insulation, Plumbing, Roofing, Siding, Windows/Doors | |
| John's Plumbing & Heating, LLC | 843 Blue Hills Avenue | Bloomfield | CT | 06002 | (860) 242-4909 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Jones Heating Service, LLC | 23 Cosgrove Road | Willington | CT | 06279 | (860) 428-1240 | Boilers/Furnaces, Heat Pumps | ||
| Joseph Abbate Plumbing & Heating Contractor Inc. | 230 Wethersfield Avenue | Hartford | CT | 06114 | (860) 527-0086 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| JP Carroll Roofing | 3107 Newington Road | West Hartford | CT | 06110 | (860) 586-8857 | Website | Roofing, Siding, Windows/Doors | |
| JR Heating & Cooling, LLC | P.O. Box 837 | Plainville | CT | 06062 | (860) 793-2686 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| JRS Building & Remodeling | 11 North Hadley Street | Naugatuck | CT | 06770 | (203) 729-0403 | Website | Air/Duct Sealing, HES audit, Hazardous Material Abatement, Insulation, Roofing, Siding, Windows/Doors | |
| Karol Construction LLC | 34 Silver Street, Apt 1 | New Britain | CT | 06062 | (860) 518-1091 | Roofing, Siding | ||
| Kawalec Plumbing & Heating, LLC | 50 Tall Oak Drive | Tolland | CT | 06084 | (860) 573-6154 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Keith Heating & Cooling LLC | 31B Wheatley Street | Danielson | CT | 06239 | (860) 377-0116 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Kellner Plumbing & Heating LLC | 389 Slater Street | South Windsor | CT | 06074 | (860) 436-6824 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Kennedy's Plumbing & Heating | 624 Wethersfield Avenue | Hartford | CT | 06114 | (860) 296-4867 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps, Insulation, Plumbing, Roofing, Siding, Windows/Doors | |
| Kenneth Warner & Sons Inc. | 65 N. Branford Road | Branford | CT | 06405 | (203) 982-3481 | Insulation, Masonry, Plumbing, Roofing, Siding, Windows/Doors | ||
| Kevin Johnson Enterprises LLC | 244 Guilford Road | Durham | CT | 06422 | 8603499299 | Website | Boilers/Furnaces, Central Air Conditioning | |
| KG Home Improvement LLC | 11 Pershing Drive | Plainville | CT | 06062 | (860) 518-0236 | Masonry | ||
| Khamp LLC | 38 Pond Street | Broad Brook | CT | 06016 | (860) 849-0766 | Electrical, Insulation, Masonry, Plumbing, Roofing, Siding, Windows/Doors | ||
| Kile Kooling, LLC | 106 Piedmont Street | Meriden | CT | 06451 | (203) 537-0721 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| King Energy LLC | 514 Trumbull Hwy | Lebanon | CT | 06249 | (860) 420-7134 | Website | Geothermal, HES audit | |
| Klebe Fuel Company, Inc. | 126 Torrington Road | Winsted | CT | 06098 | (860) 738-1114 | Website | Boilers/Furnaces, Heat Pumps | |
| Klockars Heating & Air Conditioning, LLC | 25 Wind Mill Hill Road | Branford | CT | 06405 | (203) 315-8995 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | ||
| Kozloski Plumbing & Heating | 190 Matthew Drive | Stratford | CT | 06614 | (203) 375-5010 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Krupa Oil Company, Inc. | 827 Thomsponville Road | Suffield | CT | 06078 | (860) 745-2491 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| L & L Mechanical, LLC | 28 Pie Hill Road | Goshen | CT | 06756 | (860) 491-4007 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| L.C. Mechanical LLC | 15 Bittersweet Drive | East Hartford | CT | 06108 | (860) 593-1102 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| L.H. Gault & Son Inc. | 11 Ferry Lane W. | Westport | CT | 06880 | (203) 227-5181 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| LA Plumbing & Heating LLC | 75 Woodstock Street | Hartford | CT | 06112 | (860) 840-0532 | Boilers/Furnaces, Plumbing | ||
| LaFlamme Plumbing & Heating LLC | 676 Back Road | North Windham | CT | 06256 | (860) 423-5385 | Website | Boilers/Furnaces, Plumbing | |
| Lafleur Builders | 165 Wauregan Road | Danielson | CT | 06239 | (860) 315-0769 | Website | Roofing | |
| Lagassey Custom Homes, LLC | 190 Tomlinson Avenue, 1A | Plainville | CT | 06062 | (860) 637-6625 | Electrical, Masonry, Roofing, Siding, Windows/Doors | ||
| Landlord Solutions LLC | 110 Divinity Street | Bristol | CT | 06010 | (860) 598-9868 | |||
| Landmark Air Systems Inc | 36-B Kenosia Avenue | Danbury | CT | 06810 | (203) 798-1199 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Landsen Construction Corp. | P.O. Box 441 | Glastonbury | CT | 06033 | (860) 633-6722 | Website | Masonry | |
| Landucci Heating & Cooling, Inc. | 58 Winsted Road | Torrington | CT | 06790 | (860) 496-0114 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Lantern Energy, LLC | 33 Wisconsin Avenue | Norwich | CT | 06360 | (877) 878-3006 | Website | HES audit, Insulation | |
| Lassen Heating & Cooling LLC | 230 S. Washington Street, Unit 5 | Plainville | CT | 06062 | (860) 951-5086 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| LBS Hispanic Center LLC | 151 New Park Avenue, Unit 27 | Hartford | CT | 06106 | (860) 982-1437 | Hazardous Material Abatement | ||
| Leahy's Fuels, Inc. | 130 White Street | Danbury | CT | 06810 | (203) 748-3539 ext. 211 | Website | Boilers/Furnaces, Central Air Conditioning | |
| LeClaire Heating & Air, LLC | 750 Derby Avenue | Seymour | CT | 06483 | (203) 922-1512 | Boilers/Furnaces, Central Air Conditioning, Plumbing | ||
| Link Mechanical Services, Inc. | P.O. Box 364 | New Britain | CT | 06050 | (860) 826-5880 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Litchfield County Mechanical | 8 Fitzgerald Road | Harwinton | CT | 06791 | (860) 601-2621 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Litchfield Geothermal | P.O. Box 277 | Litchfield | CT | 06759 | (860) 459-8279 | Website | Geothermal | |
| Litchfield Hills Solar, LLC | 195 Great Hollow Road | West Cornwall | CT | 06796 | (860) 868-6047 | Website | Solar | |
| LT Construction LLC | 245R Shaw Street | New London | CT | 06320 | (860) 326-9322 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| M & D Construction | 538 Forbes Street | East Hartford | CT | 06118 | (860) 913-5527 | Masonry | ||
| M & M Heating & Cooling, LLC | 7 Island Brook Avenue D-1 | Bridgeport | CT | 06606 | (203) 377-5866 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| M & R Mechanical Services LLC | 1050 Bridgeport Avenue, Unit 2F | Milford | CT | 06460 | (203) 874-7914 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| M and M Mechanical, LLC | 19 Shelton Avenue | Wolcott | CT | 06716 | (203) 721-7477 | Website | Boilers/Furnaces, Central Air Conditioning | |
| M. Walenta Enterprises, LLC | P.O. Box 263 | Plainfield | CT | 06374 | (860) 564-4242 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| M.C. Electrical Contractors LLC | 60 Woodmere Road | West Hartford | CT | 06119 | (860) 883-8655 | Website | Electrical | |
| M.D.G. Home Improvements | 1 Macintosh Road | Lyme | CT | 06371 | (860) 705-0597 | Roofing, Siding, Windows/Doors | ||
| M.J. Emonds Mechanical Contractors LLC | 17 Nutmeg Lane | Glastonbury | CT | 06033 | (860)-657-4554 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Plumbing | |
| M.J. Fahy & Sons, Inc. | 20 Judd Street | Waterbury | CT | 06702 | (203) 574-4808 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Macca Plumbing & Heating | 284 Locust Street | Hartford | CT | 06114 | (860) 560-1200 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Malangone Mechanical, LLC | 17 Mix Avenue | West Haven | CT | 06516 | (203) 392-0433 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Marandola Fuel Service, LLC | 91 Kent Road | New Milford | CT | 06776 | (860) 355-4877 | Website | Boilers/Furnaces, Heat Pumps | |
| Marciano Building & Remodeling | 522 Pool Road | North Haven | CT | 06473 | (203) 641-2851 | |||
| Mark H. Sekorski General Contracting LLC | 180 Old Waterbury Road | Terryville | CT | 06786 | (860) 585-8331 | Roofing, Siding, Windows/Doors | ||
| Marvelous Masonry, LLC | 191 Oak Drive | Watertown | CT | 06795 | (203) 706-5717 | Website | Masonry, Windows/Doors | |
| Marwin Mechanical Services Inc. | 1 Essex Plaza | Essex | CT | 06426 | (860) 460-1164 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Marx Diversified Interests, LLC | 70 Yorkshire Drive | Hebron | CT | 06248 | (860) 643-8787 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | ||
| Marzano Plumbing and Heating Co., Inc. | 520 Franklin Avenue | Hartford | CT | 06114 | (860) 296-9624 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Master Roofing LLC | 42 Crescent Street | New London | CT | 06320 | (860) 908-3920 | Roofing, Siding | ||
| Masters Heating and Air Conditioning, Inc. | P.O. Box 1457 | Wallingford | CT | 06492 | (203) 265-4434 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Matt Melillo Comfort Services & Const. LLC | 8 Carriage Drive | Brookfield | CT | 06804 | (203) 740-7295 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Roofing | ||
| Maus & Son, Inc. | 628 Town Street | Moodus | CT | 06469 | (860) 873-8454 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Maximum Home Performance LLC | 984 Southford Road | Middlebury | CT | 06762 | (203) 509-9843 | Website | Insulation, Roofing, Siding, Windows/Doors | |
| Maximum Home Performance, LLC | 153 Boston Post Road #1032 | East Lyme | CT | 06333 | (877) 827-9242 | Website | Masonry | |
| McCutcheon Building & Remodeling, LLC | 32 Myrock Avenue | Waterford | CT | 06385 | (860) 287-4422 | Website | Electrical, Insulation, Masonry, Plumbing, Roofing, Siding, Windows/Doors | |
| Mercado Construction | Hartford | CT | (860) 856-8866 | Website | ||||
| Michael Burruano Plumbing & Heating | 9 Attawauhood Trail | Amston | CT | 06231 | (860) 639-1742 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Mid-State Mechanical Contractors | 770 Newfield Street | Middletown | CT | 06457 | (860) 635-3230 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Midland Contracting Group | 140 Midland Street | Bridgeport | CT | 06605 | (203) 336-0179 | |||
| Miele Mechanical Services LLC | 238 S Main Street | New Britain | CT | 06051 | (860) 539-9234 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Millas Heating & Cooling LLC | P.O. Box 159 | Mystic | CT | 06355 | (860) 415-9962 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps, Plumbing | |
| Miller Fuel, LLC | P.O. Box 1506 | Burlington | CT | 06013 | (860) 675-6121 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Miller Plumbing & Heating | 147 Park Road | West Hartford | CT | 06119 | (860) 523-9966 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Millstream Construction LLC | 219 Naubuc Avenue | East Hartford | CT | 06118 | (860) 288-5805 | Website | Roofing, Siding, Windows/Doors | |
| Minutemen Plumbing & Heating | 3 Old North Road | Colebrook | CT | 06021 | (860) 806-7070 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Mitchell Fuel Co., Inc. | 1209 Sullivan Avenue | South Windsor | CT | 06074 | (860) 644-2561 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| MJB Plumbing and Heating LLC | 42 Stuart Avenue #02 | Norwalk | CT | 06850 | (203) 505-4073 | Boilers/Furnaces, Plumbing | ||
| Modern Heating & Air Conditioning LLC | 1015 Bridgeport Avenue | Milford | CT | 06460 | (203) 283-0593 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Monroe Mechanical LLC | 10 Cotton Tail Lane | Monroe | CT | 06468 | (203) 395-3922 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Montanari Fuel Service, Inc. | 15 South Street | Ridgefield | CT | 06877 | (203) 438-2688 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Moyer Construction | 45 Tauton Hill Road | Newtown | CT | 06470 | (802) 353-6953 | Masonry | ||
| Mr. Handyman of Upper Fairfield County | 2480 Black Tpke | Fairfield | CT | 06825 | (866) 550-1710 | Website | HES audit, Insulation | |
| MTL Heating & Cooling | 375 Morgan Lane Unit 404 | West Haven | CT | 06516 | (203) 619-1267 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Mull Bros., Inc. | 61 Beaver Road | Wethersfield | CT | 06109 | (860) 529-8255 | Website | Boilers/Furnaces, Heat Pumps | |
| Munro Plumbing and Heating, Inc. | 114 Overbrook Road | Madison | CT | 06443 | (203) 245-3369 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Murgo Mechanical LLC | 64 Thompson Street, A202 | East Haven | CT | 06513 | (203) 468-9533 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Murphy Bros Heating & A/C | 53 Lancaster Drive, Unit #6 | Beacon Falls | CT | 06403 | (203) 729-0020 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Musco Propane, LLC | 585 Wolcott Road | Wolcott | CT | 06716 | (203) 879-8803 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Nazca Home Improvement LLC | 21 Lincoln Street, A1 | Hartford | CT | 06106 | (860) 214-7799 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Masonry, Roofing | ||
| Nealon Energy Solutions, LLC | 9 Robin lane | Clinton | CT | 06413 | (860) 669-0333 | Website | Insulation | |
| Nero A/C, Heating & Refrigeration, Inc. | 334 State Street | North Haven | CT | 06473 | (203) 248-8110 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| Neupmann Fine Carpentry, LLC | 1 Castaway Drive | Danbury | CT | 06811 | (203) 770-2071 | Website | Insulation, Masonry, Plumbing, Roofing, Siding | |
| New Concepts Plumbing & Heating, Inc. | 251 East Johnson Avenue | Cheshire | CT | 06410 | (203) 271-0105 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps | |
| New England Building Products | 45 Golden Street | Meriden | CT | 06450 | (203) 235-7981 | Website | Insulation, Roofing | |
| New England Conservation Services, LLC | 15 Lunar Drive | Woodbridge | CT | 06525 | (877) 389-7077 | Website | HES audit, Insulation, Windows/Doors | |
| New England Green Homes LLC | 59 East Main Street | Stafford | CT | 06076 | (860) 930-7794 | Insulation, Windows/Doors | ||
| New England Heating and Air Conditioning, LLC | 309 Twin Lakes Road | North Branford | CT | 06471 | (203) 488-7904 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| New England Performance Insulation, LLC | 262A Quarry Road | Milford | CT | 06460 | (203) 783-0748 | Website | Insulation | |
| New England Roofing & Home Repair LLC | 483 New England Lane | Orange | CT | 06477 | (203) 795-3747 | Website | Masonry, Roofing | |
| New England Smart Energy Group, LLC | 34 Sherman Court | Fairfield | CT | 06824 | (203) 292-8088 | Website | HES audit | |
| New England Total Energy | 469 West Putnam Avenue | Greenwich | CT | 06830 | (800) 260-5954 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| New Flue Chimney LLC | 31 Blake Road | Monroe | CT | 06468 | (203) 673-2352 | Masonry | ||
| New Flue Chimney, LLC | 31 Blake Road | Monroe | CT | 06468 | (203) 254-3326 | Masonry | ||
| Newgate Oil Company Inc. | 38 Jansen Court | West Hartford | CT | 06110 | (860) 953-9999 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Newington Electric Co. | 72 Pane Road | Newington | CT | 06111 | (860) 667-1948 | Website | Electrical | |
| NJF Electrical Services, LLC | 21 Englewood Drive | East Haven | CT | 06513 | (203) 468-0356 | Website | Electrical | |
| Norbert E. Mitchell Co., Inc. | 7 Federal Road | Danbury | CT | 06810 | (800) 237-3835 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Solar | |
| North Atlantic Contracting Corp. | 11 Boulder CIrcle | Norwalk | CT | 06854 | (203) 969-6781 | Website | Masonry | |
| Northeast Oil and Propane, Inc. | 235 Westcott Road | Danielson | CT | 06239 | (860) 779-3755 | Website | Boilers/Furnaces, Heat Pumps | |
| Northeast Plumbing & Heating, LLC | 239 Moosup Pond Road | Moosup | CT | 06354 | (860) 864-7630 | Plumbing, Roofing | ||
| Northern Comfort Mechanical, LLC | 178 Osborne Street | Danbury | CT | 06810 | (203) 456-5163 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Northern Improvement Company | 148 E Albert Street | Torrington | CT | 06790 | (860) 307-0965 | Masonry | ||
| Nova Construction, LLC | 20 Central Street | Bristol | CT | 06010 | (860) 883-6559 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Noyan General Contractors LLC | 65 Tredeau Street | Hartford | CT | 06114 | (860) 913-7817 | Masonry, Roofing, Siding, Windows/Doors | ||
| NTA, LLC | 137 Danbury Road, Suite 290 | New Milford | CT | 06771 | (203) 948 0560 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | ||
| Nunes Quality Plumbing | 50 Dewey Avenue | Windsor | CT | 06095 | (860) 688-8709 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Nutmeg Mechanical Services, Inc. | 130-3 Utopia Road | Manchester | CT | 06042 | (860) 643-2042 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps | |
| Nutmeg Plumbing & Heating, LLC | 78 Haddam Neck Road | East Hampton | CT | 06424 | (203) 751-2841 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Odd Jobs LLC | 270 Wolcott Road | Wolcott | CT | 06716 | (203) 206-2658 | Masonry | ||
| Omni Mechanical Services, LLC | 229 Farnham Road | South Windsor | CT | 06074 | (860) 256-5249 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| One Hour Heating & Air Conditioning - Shelton | 330 River Road | Shelton | CT | 06484 | 203-567-4888 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| One Hour Heating & Air Conditioning - Terryville | 10 Makara Street | Terryville | CT | 06782 | (860) 589-8979 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| One Way Plumbing and Heating, Inc. | 531 Mount Parnassus Road | East Haddam | CT | 06423 | 8608732363 | Boilers/Furnaces, Plumbing | ||
| Onofreo Home Comfort Systems, LLC | 85 Waverly Avenue | Milford | CT | 06461 | (203) 610-5606 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Ortiz Refrigeration, AC & Heating | 336 Kent Road | New Milford | CT | 06776 | (860) 799-6283 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| OSA Heating & Cooling, LLC | 838 Woodend Road | Stratford | CT | 06615 | (203) 338-0371 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Oscar's Abatement LLC | 29 1/2 Meadow Street | Hartford | CT | 06114 | (860) 296-7459 | Hazardous Material Abatement | ||
| Osterman Propane - Palmer | 1 Blanchard Street | Palmer, MA | MA | 01069 | (800) 332-3353 | Website | Boilers/Furnaces | |
| OT Builders, LLC | 42 Belmont Street | Hartford | CT | 06106 | (860) 716-3635 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Other | CT | |||||||
| P.K. Windows, LLC | 952 Savage Street | Southington | CT | 06489 | (860) 628-1173 | Website | Insulation, Siding, Windows/Doors | |
| Pablos Home Improvement LLC | 1 Dorus Street, Apt 3R | Stratford | CT | 06615 | (203) 504-0403 | Masonry | ||
| Pack-Timco, Inc. | 765 Honeyspot Road | Stratford | CT | 06615 | (203) 847-8781 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Parkway Oil Co. Inc. | 30 Stagg Street | Stratford | CT | 06615 | (203) 367-0083 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Patco Sheet Metal Co. | 26 Oak Street | Old Lyme | CT | 06371 | (860) 575-4086 | Air/Duct Sealing, Boilers/Furnaces | ||
| Paul Burdick Oil Co, LLC | 950 Middlesex Tpke | Old Saybrook | CT | 06475 | (860) 388-1130 | Website | Boilers/Furnaces | |
| Pawcatuck Roofing Company, Inc. | 20 S. Anguilla Road | Pawcatuck | CT | 06379 | (860) 599-1024 | Website | Roofing | |
| Peak Performance | 9 Edgebrook Drive | West Hartford | CT | 06117 | (860) 394-8178 | Masonry, Roofing, Siding, Windows/Doors | ||
| Pelletier Mechanical Services, LLC | 194 E Main Street, Suite D | Thomaston | CT | 06787 | (860) 283-0316 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Pennywise Oil Company, Inc. | 35 Westbrook Industrial Park Road | Westbrook | CT | 06498 | (860) 399-8244 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Peoples Products, Inc. | 252 Hartford Avenue | Newington | CT | 06111 | (800) 354-7660 | Website | Roofing, Siding, Windows/Doors | |
| Perfect View Installation LLC | 22C Hart Street | Berlin | CT | 06037 | (860) 883-6281 | Masonry, Roofing, Siding, Windows/Doors | ||
| Peter Kupchick Heating & Cooling, Inc | 213 Farist Road | Fairfield | CT | 06825 | (203) 259-9787 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, HES audit, Heat Pumps | |
| Peter L. Brown Co. | P.O. Box 59 | Granby | CT | 06035 | (860) 653-3350 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Petey's Plumbing LLC | 9 Bowling Green Drive | North Haven | CT | 06473 | (203) 745-5390 | Website | Plumbing | |
| Petro Home Services - North Haven | 212 Elm Street | North Haven | CT | 06473 | (888) 735-5651 | Website | Boilers/Furnaces, Central Air Conditioning | |
| PG & Son Heating and Air Conditioning, Inc. | 215 Lee Farm Drive | Southbury | CT | 06488 | (203) 267-1369 | Boilers/Furnaces, Central Air Conditioning | ||
| Phase 2 Services, Inc. | 58 Pippin Drive East | Glastonbury | CT | 06033 | (860) 430-1337 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Phoenician Home Improvement | 11 Heritage Drive | Berlin | CT | 06037 | (860) 748-0541 | Website | Roofing, Siding, Windows/Doors | |
| Pinkham Woodworking | 239 Dorothy Drive | Torrington | CT | 06790 | (860) 733-3903 | Masonry | ||
| Plumbing Creations, LLC | 16 Claredon Street | Hartford | CT | 06114 | (860) 604-2589 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Plymouth Oil Service, Inc. | 25 Burr Road | Plymouth | CT | 06782 | (860) 283-6651 | Website | Boilers/Furnaces, Heat Pumps | |
| Polytemp, Inc. | 21 North Pear Street | Port Chester | NY | 10573 | (203) 531-6060 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps | |
| PosiGen Solar Solutions | 345 Huntington Tpke, Suite 100 | Bridgeport | CT | 06610 | (504) 293-4819 | Website | HES audit, Solar | |
| Potential Energy LLC | 61 E. Main Street | Bristol | CT | 06010 | (844) 564-7283 | Website | HES audit | |
| Potters Oil Service, Inc. | 688 Boston Post Road | North Windham | CT | 06256 | (860) 423-1684 | Website | Boilers/Furnaces, Heat Pumps | |
| Power Home Remodeling Group, LLC | 2501 Seaport Drive | Chester | PA | 19013 | (888) 736-6335 | Website | Insulation, Masonry, Roofing, Siding, Windows/Doors | |
| Power Point Energy, LLC | 82 Wolcott Hill Road | Wethersfield | CT | 06109 | (860) 436-3511 | Geothermal, HES audit | ||
| Precision Mechanical LLC | 386 Main Street | Manchester | CT | 06040 | (860) 878-7927 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Preferred Air Systems, Inc | 15 Federal Road | Danbury | CT | 06810 | (203) 778-6286 Ext. 10 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, HES audit, Hazardous Material Abatement, Heat Pumps | |
| Prestige Air, Inc. | 74-A Park Lane | New Milford | CT | 06776 | (860) 350-1600 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Pro Fox Contractors, LLC | 65 Wildemere Avenue | Waterbury | CT | 06705 | (860) 589-7727 | Masonry | ||
| Pro Source, LLC | 200 Mountain Road | Farmington | CT | 06032 | (860) 305-7220 | Website | Insulation, Masonry, Roofing, Siding, Windows/Doors | |
| Pro-American Construction Company, LLC | P.O. Box 82 | Beacon Falls | CT | 06403 | (203) 525-6690 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| PSC Mechanical | 26 Lucia Road | Bristol | CT | 06010 | (860) 479-0543 | Boilers/Furnaces, Central Air Conditioning | ||
| PTE Energy | 93 Whiting Street | Plainville | CT | 06062 | (860) 747-6037 | Website | Electrical | |
| Q's Plumbing and Heating, LLC | 132 Fire Street | Oakdale | CT | 06370 | (860) 501-6006 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Quality Home Improvement | 10 Grady Drive | East Hartford | CT | 06108 | (860) 983-9639 | Masonry | ||
| Quality Home Systems Heating / AC, LLC | 22328 Chamberlain Hwy | Berlin | CT | 06037 | (860) 827-9682 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Quality Insulation of Eastern CT Inc. | 505 Norwich Avenue | Taftville | CT | 06380 | (860) 886-2638 | Website | Insulation, Masonry, Windows/Doors | |
| Quality Mechanical Corporation | 231 Silver Sands Road | East Haven | CT | 06512 | (203) 467-6712 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Quality Propane, Inc. | 359 E. Main Street | Clinton | CT | 06413 | (860) 669-4277 | Website | Boilers/Furnaces | |
| Quinn Plumbing and Heating, LLC | 34 Raccio Park Road, Suite 12 | Hamden | CT | 06514 | (203) 230-2227 | Website | Boilers/Furnaces, Electrical, Heat Pumps, Plumbing | |
| R & J Home Improvement LLC | 13 Cedar Street | Wethersfield | CT | 06109 | (203) 535-2304 | |||
| R & M Insulation, LLC | 328 Winchester Road | Winsted | CT | 06098 | (860) 738-2144 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Insulation | ||
| R & R Plumbing & Heating, Inc. | 600 Center Street | Manchester | CT | 06040 | (860) 649-6574 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| R&B Refrigeration, Air Conditioning & Heating | 18 Graves Avenue | Guilford | CT | 06437 | (203) 453-6831 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| R&W Heating, LLC | 10 Witter Road | Salem | CT | 06420 | (860) 846-9993 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| R. L. Construction | 8 Parkmore Street | New Britian | CT | 06051 | (860) 978-5600 | Masonry, Roofing, Siding, Windows/Doors | ||
| R.T. Capobianco Plumbing & Heating, Inc. | 51 Williams Street | Hartford | CT | 06120 | (860) 522-9898 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Rafa's Restoration, LLC | 87 Cedar Street, Suite 1 | Norwalk | CT | 06854 | (203) 854-9180 | Masonry, Roofing, Siding | ||
| Ralph Mann & Sons, Inc. | 505 Main Street | Ansonia | CT | 06401 | (800) 995-6266 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Rapid Plumbing Service, Inc. | 375 Morgan Lane, Unit 209 | West Haven | CT | 06516 | (203) 934-8628 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Raps Plumbing & Heating, Inc. | 554 Boston Post Road | Milford | CT | 06460 | (203) 876-1212 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Ray Page Plumbing, Inc. | 500-7 Talcotville Road | Vernon | CT | 06066 | (860) 926-4842 | Website | Plumbing | |
| RDR Air LLC | 360 Sniffens Lane | Stratford | CT | 06615 | (203) 521-1489 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Reed Mechanical Solutions LLC | 409 Lazy Lane | Southington | CT | 06489 | (860) 637-7641 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning | |
| Rego Construction, LLC | 15 Webster Street | Hartford | CT | 06114 | (860) 525-4442 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Insulation, Roofing, Siding, Windows/Doors | |
| Reliable Mechanical Contractors | 11 Palisado Avenue | Windsor | CT | 06095 | (860) 752-4218 | Boilers/Furnaces, Heat Pumps | ||
| Renewable Energy CT | 965 W. Main Street | Branford | CT | 06405 | (855) 875-7441 | Website | Solar | |
| Renewal by Andersen of Southern New England | 26 Albion Road, Suite 1 | Lincoln, RI | RI | 02865 | (401) 228-9800 | Website | Windows/Doors | |
| Renshaw Plumbing & Heating | 247 Shaw Street | New London | CT | 06320 | (860)447-3903 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Renz Heating and Air Conditioning LLC | 34 Finch Street | Milford | CT | 06460 | (203) 877-2224 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps | ||
| RER Associates, LLC | 75 Lustig Road | Willington | CT | 06279 | (860) 234-0860 | Hazardous Material Abatement, Masonry | ||
| Reutter Mechanical, LLC | 297 Jobs Hill Road | Ellington | CT | 06029 | (860) 707-2002 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| RGS Energy | 110 16th Street, Suite 300 | Denver | CO | 80202 | (860)823-0031 | Website | Electrical, Solar | |
| Rhino Shield Northeast | 95 Church Street, Suite 4A | Pembrole | MA | 02359 | (888) 907-4466 | Website | Siding | |
| Rich & John's Chimney | 78 hard Hill Road | Woodbury | CT | 06798 | Website | Heat Pumps, Masonry | ||
| Rich Carlson Heating & Cooling, LLC | 110 Calhoun Street | Torrington | CT | 06790 | (860) 601-2735 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Rich Donegan Home Craftsman, LLC | 92 Litchfield road | Morris | CT | 06763 | (860) 459-0968 | Website | Insulation, Masonry, Roofing, Siding | |
| Rich's Heating, LLC | P.O. Box 182 | Waterford | CT | 06385 | (860) 443-4328 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Rich's Plumbing, Heating and Air Conditioning | 12 Moody Road | Enfield | CT | 06082 | (860) 763-2015 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Rick's Main Roofing LTD | 26 Fitch Street | Norwalk | CT | 06855 | (203) 838-5858 | Website | Roofing, Windows/Doors | |
| Rick's Plumbing Service, Inc. | 1050 Bridgeport Avenue | Milford | CT | 06460 | (203) 516-4542 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Ridgefield Overhead Doors, LLC | 703 Danbury Road | Ridgefield | CT | 06877 | (203) 431-3667 | Website | Windows/Doors | |
| Ridgid Mechanical Systems, LLC | 101 Woodland Avenue | Bloomfield | CT | 06002 | (203) 843-6811 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Riley Plumbing & Heating Co., Inc. | 293 New Britain Road | Kensington | CT | 06037 | (860) 225-1534 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Riley's Heating Service | 20 Fullertown Road | Baltic | CT | 06330 | (860) 822-9217 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Rings End, Inc. | 181 West Avenue | Darien | CT | 06820 | (203) 656-7553 | Website | Masonry, Windows/Doors | |
| Rite Temp Heating & Cooling, LLC. | 47 South Plains Road | Southington | CT | 06489 | (860) 877-3550 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| River Valley Oil Service, Inc. | P.O. Box 866 | Middletown | CT | 06457 | (860) 342-5670 | Website | Boilers/Furnaces | |
| River Valley Roofers | 59 Cottage Street | New Hartford | CT | 06057 | (860) 782-1170 | Website | Roofing | |
| Roberge Plumbing Inc (Roberge Plumbing & HVAC) | 433 East Street | Plainville | CT | 06062 | 8607471511 | Plumbing | ||
| Rocky's Home Improvements | 706 Redding Road | West Redding | CT | 06896 | (203) 792-4273 | Insulation, Masonry, Siding, Windows/Doors | ||
| Roger Crampton LLC | 236 Shore Road | Old Lyme | CT | 06371 | 8604342200 | Website | Boilers/Furnaces, Plumbing | |
| Roman Oil Co., Inc. | 31 Bee Street, #2 | Meriden | CT | 06450 | (203) 235-3371 | Website | Boilers/Furnaces, Heat Pumps | |
| Romano Plumbing, Heating and Construction | 124 Wright Road | Rocky Hill | CT | 06067 | (860) 794-1228 | Boilers/Furnaces, Electrical, Insulation, Plumbing, Roofing | ||
| Roofs By Welch, Inc. | 66 Cherry Street | East Hartford | CT | 06108 | (860) 282-9790 | Website | Roofing | |
| Ross Mechanical Contractors, LLC | 440 South Main Street | New Britain | CT | 06051 | (860) 356-4324 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Ross Solar | 100 Summit Lake Drive Suite 201 | Valhalla | NY | 10595 | (914) 286-7000 | Website | Solar | |
| Ross Solar | 100 Summit Lake Drive, Suite 210 | Valhalla | NY | 10595 | (203) 512-4500 | Website | Solar | |
| Royal Construction Company | 512 Cherrybrook Road | Canton | CT | 06019 | (860) 689-3332 | Website | Roofing, Siding | |
| Rural Fuels | 7171 Main Street | Trumbull | CT | 06611 | (203) 261-3541 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Rutkowski Plumbing & Heating Co. | 62A Broad Street | New Britain | CT | 06053 | (860) 223-8569 | Website | Boilers/Furnaces, Plumbing | |
| Ryan F. Murphy Heating & Cooling, LLC | 48 Long Mountain Road | New Milford | CT | 06776 | (203) 994-4953 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Ryan Oil Company Inc. | 11B Rossotto Drive | Hamden | CT | 06514 | (203) 248-6984 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| S.D.R. Plumbing & Heating, Inc. | 33 Nurney Street | Stamford | CT | 06902 | (203) 348-2295 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Insulation, Plumbing | |
| S.W.C. Plumbing LLC | 8 Wildwood Lane | Norwalk | CT | 06850 | (203) 667-9644 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Santa Energy | 154 Admiral Street | Bridgeport | CT | 06605 | (203) 362-3332 x1318 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Saucier Mechanical Services Inc. | 148 Norton Street | Plantsville | CT | 06479 | (860) 628-9999 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Sav-Mor Cooling & Heating, Inc. | 231 Captain Lewis Drive | Southington | CT | 06489 | (860) 621-9959 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Save Home Energy, Inc. | 1082 Farmington Avenue | Kensington | CT | 06037 | (860) 828-6686 | Website | Air/Duct Sealing, HES audit, Insulation, Windows/Doors | |
| SB Plumbing and Heating, LLC | 274 Petrose Circle | Orange | CT | 06477 | (203) 507-9108 | Boilers/Furnaces, Electrical, Heat Pumps, Insulation, Masonry | ||
| Schede Plumbing & Heating | 130-3 Lenox Avenue | Stamford | CT | 06906 | (203) 969-2299 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Scott Whiteley Builders | 35 Karin Drive | Central Village | CT | 06332 | (860) 268-6149 | Masonry | ||
| Scoville Plumbing and Heating, Inc. | 311 South Main Street | Torrington | CT | 06790 | (860) 489-5010 | Website | Boilers/Furnaces, Plumbing | |
| Sea Side Restoration | 986 Killingworth Road | East Haddam | CT | 06423 | (860) 853-0493 | Website | Masonry, Roofing, Siding, Solar, Windows/Doors | |
| Sears Home Improvement Products Inc. | 1024 Florida Central Pkwy | Longwood, FL | FL | 32750 | (407) 551-6000 | Website | Boilers/Furnaces, Central Air Conditioning, Roofing, Siding, Windows/Doors | |
| Seaview Custom Homes, LLC | 308 Pettipaug Road | Westbrook | CT | 06498 | (860) 440-7962 | Website | Roofing, Siding, Windows/Doors | |
| Secondino Mechanical Services, LLC | P.O. Box 926 | North Branford | CT | 06471 | (203) 907-9610 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Select Mechanical Services Inc. | 550 N Main Street, Unit C2-1 | Southington | CT | 06489 | (860) 681-6818 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Sensible Home Products, LLC | 296 Conestoga way | Glastonbury | CT | 06033 | (860) 748-8772 | Website | Insulation, Roofing, Siding, Windows/Doors | |
| Servco Oil, Inc. | 387 Danbury Road | Wilton | CT | 06897 | (203) 762-7994 | Website | Boilers/Furnaces, Heat Pumps | |
| Service Stars, Inc. | 48 Pembroke Road | Danbury | CT | 06811 | (203) 763-4044 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Seymour Energy Services LLC | P.O. Box 316 | Seymour | CT | 06483 | (203) 888-1700 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Shelton Oil and Heating | 80 Huntington Street | Shelton | CT | 06484 | (203) 538-7145 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| Shetucket Plumbing & Heating, LLC | 45 Sunrise Street | Norwich | CT | 06360 | (860) 625-4071 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | ||
| Shoreline Mechanical Services LLC | 871 Saw Mill Road | West Haven | CT | 06516 | (203) 940-3273 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Shoreline Spray Foam LLC | 5 Horsley Avenue | New Haven | CT | 06512 | (203) 467-3626 | Website | Insulation | |
| Sila Heating & Air Conditioning Inc. | 65 High Ridge Road #483 | Stamford | CT | 06905 | (914) 966-0800 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Silk Plumbing & Heating, Inc. | 4 Quincy Street | Norwalk | CT | 06850 | (203) 838-0157 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| Silver City Furnace Co. Inc. | 316 East Main Street | Meriden | CT | 06450 | (203) 237-0995 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Silverio Mechanical, LLC | 80-3 Plains Road | Essex | CT | 06426 | (860) 581-8396 | Website | Boilers/Furnaces, Central Air Conditioning, Geothermal, Plumbing | |
| Sima Drilling Company, Inc. | 150 School House Road | Cheshire | CT | 06410 | (203) 272-3077 | Website | Geothermal, Heat Pumps, Tree Removal | |
| Simppl Solutions | Simsbury | CT | (860) 550-1952 | Website | ||||
| Sippin Energy Products | 234 Main Street | Monroe | CT | 06468 | (203) 261-3668 | Website | Boilers/Furnaces, Heat Pumps | |
| Sky Property Services, LLC | 35-37 Hubbell Avenue | Ansonia | CT | 06401 | (203) 736-9648 | Website | Insulation, Roofing, Siding, Windows/Doors | |
| SLS Heating, LLC | P.O. ox 424 | Waterford | CT | 06385 | (860) 447-8709 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| SM Mechanical Services LLC | 600 Nott Street | Wethersfield | CT | 06109 | (860) 368-1572 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Smart Roofs Solar Inc. | 30 Nutmeg Drive | Trumbull | CT | 06611 | (203) 209-2057 | Website | Roofing, Solar | |
| Smart Thermal Solutions, LLC | 437 Pequot Trail | Pawcatuck | CT | 06379 | (860) 373-8040 | Website | Boilers/Furnaces, Central Air Conditioning, Plumbing | |
| Soderquist Plumbing & Heating LLC | 7 Oak Drive | Sandy Hook | CT | 06482 | (203) 426-6097 | Boilers/Furnaces, Plumbing | ||
| Solar Energy Resources, LLC | 76 Watertown Road | Thomaston | CT | 06787 | (860) 880-8300 | Website | Solar | |
| SolarCity Corporation | 3055 Clearview Way | San Mateo, CA | CA | 94402 | (650) 681-500 | Website | Solar | |
| Solvit Home Services | 65 Farmington Valley Drive | Plainville | CT | 06062 | (860) 747-2000 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, HES audit, Heat Pumps, Insulation, Plumbing | |
| Source Construction Services, LLC | 46 Maple Drive | New Milford | CT | 06776 | (860) 488-0587 | Website | Masonry | |
| Spear Contractors, Inc. | 811 Hopewell Road | Glastonbury | CT | 06073 | (860) 659-5818 | Masonry | ||
| Spicer Advanced Gas | 36 Thames Street | Groton | CT | 06340 | (860) 445-2436 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Spray-Tech Insulation, LLC | 122 Spring Street, Suite C-3 | Southington | CT | 06489 | (860) 621-3000 | Website | Air/Duct Sealing, Insulation | |
| Spring Brook Ice & Fuel Service | 19 Woodland Street | New Britain | CT | 06051 | (860) 225-6491 | Website | Boilers/Furnaces | |
| Stafford Mechanical Services, Inc. | 4 Industrial Park Drive | Stafford Springs | CT | 06076 | (860) 684-9485 | Website | Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps | |
| Stanco Energy LLC | 8 Grove Street | Cheshire | CT | 06410 | (203) 272-4822 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Standard Oil of CT, Inc. | 299 Bishop Avenue | Bridgeport | CT | 06610 | (800) 822-3835 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Stanley Home Improvement, LLC | 89 Harding Avenue | Newington | CT | 06111 | (860) 995-5991 | Masonry | ||
| Starco of New Britain, Inc. | 1052 West Main Street | New Britain | CT | 06053 | (860) 223-5071 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Staron Plumbing & Heating Co. | 93 Coyote Trail | Higganum | CT | 06641 | (860) 950-4186 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| State Line Propane/Oil | 500 Salmon Brook | Granby | CT | 06035 | (860) 653-8076 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Stephen Ouellette Siding & Roofing | 480 Church Street | Newington | CT | 06111 | (860) 667-2161 | Masonry, Siding | ||
| Steve Basso Plumbing Heating & A/C, LLC | 83 Brookfield Avenue | Bridgeport | CT | 06610 | (203) 335-0224 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps, Plumbing | |
| Strawbuilder LLC | 248 Turnbull Road | New Hartford | CT | 06057 | (860) 605-7784 | Website | Masonry | |
| Sturdy Home Improvement, Inc. | 459 Main Street | Indian Orchard | MA | 01151 | (413) 543-5906 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Suburban Oil Co., LLC | 1411 Middletown Avenue | Northford | CT | 06472 | 2034849897 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Suburban Remodelers | 239 Card Street | Lebanon | CT | 06249 | (860) 573-6085 | Roofing, Siding, Windows/Doors | ||
| Sunlight Solar Energy Inc. | 90 Hamilton Street | New Haven | CT | 06511 | (203) 878-9123 | Website | Solar | |
| Sunrise Plumbing, LLC | 144 Hempstead Street | New London | CT | (860) 861-2860 | Plumbing | |||
| Superior Energy, LLC | 994 Hartford Turnpike | Vernon | CT | 06066 | (860) 875-6221 | Website | Boilers/Furnaces | |
| Superior Home Performance, LLC | 8 Spencer Street | Manchester | CT | 06040 | (860) 956-6469 | Website | Insulation | |
| Superior HVAC & Tank Removal | 240 Railroad Hill Street | Waterbury | CT | 06708 | (203) 755-7400 x211 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Superior Insulation & Services, LLC/CT Retrofit | 393 Gold Star Highway | Groton | CT | 06340 | (860) 238-3113 | Website | HES audit, Insulation, Windows/Doors | |
| Superior Remodelers LLC | 3 Simm Lane, Suite 1C | Newtown | CT | 06470 | (888) 330-8148 | Website | Insulation, Roofing, Siding, Windows/Doors | |
| Systematic Mechanical Contractors, LLC | 565 Summit Drive | Orange | CT | 06477 | (203) 887-6818 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| T & S Heating & Air Conditioning LLC | 7 Belaire Terrace | Portland | CT | 06480 | (860) 342-1506 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| T. Mednick Services, LLC | 168 Merwin Avenue | Milford | CT | 06460 | (203) 815-5485 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| T.P. Heating and Cooling LLC | 704 Flanders Road | Southington | CT | 06489 | (860) 305-7867 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Taylor Energy | 152 Broad Brook Road | Broad Brook | CT | 06016 | (860) 623-3308 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Ted's Plumbing & Heating, Inc | 321 Silver Lane | East Hartford | CT | 06118 | (860) 569-0501 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Temp Check Services, LLC | 33 Morrissey Lane | West Haven | CT | 06516 | (203) 606-3572 | Website | Geothermal, HES audit, Masonry | |
| Terrys Energy LLC | 1104 High Road | Berlin | CT | 06037 | (860) 828-3099 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Geothermal, Heat Pumps, Plumbing | ||
| The Energy Monster CT | 64 Field Road, Unit 4E | Somers | CT | 06071 | (860) 967-0924 | Website | Air/Duct Sealing, HES audit, Insulation | |
| The Energy Store, LLC | 3 Simm Lane, Suite 1C | Newton | CT | 06470 | (860) 480-9294 | Website | Air/Duct Sealing, HES audit, Insulation, Windows/Doors | |
| The Furnace Man | 184 North Airline Road | Wallingford | CT | 06492 | (203) 678-4171 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| The HDL Co. LLC | 15 Fitch Road | Lisbon | CT | 06351 | (860) 334-2970 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| The Heat People, Inc. | 2239 Norwich New London Tpke | Uncasville | CT | 06382 | (860) 848-4121 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| The Joseph Dess Co LLC | 430 Fern Hill Road | Bristol | CT | 06010 | (860) 584-8160 | |||
| The Krall Coal & Oil Co., Inc. | 1269 Townsend Avenue | New Haven | CT | 06513 | (203) 466-1130 | Website | Boilers/Furnaces, Heat Pumps | |
| The Roofing Store LLC | P.O. Box 294 | Plainfield | CT | 06374 | (860) 564-8300 | Website | Roofing, Siding, Windows/Doors | |
| The Shaffer Company, Inc. | 242 Main Street | Bristol | CT | 06010 | (860) 583-1363 | Website | Boilers/Furnaces, Plumbing | |
| The Siding Guys, LLC | 189 Whiting Street, Unit 12 | Plainville | CT | 06062 | (860) 479-5971 | Website | Masonry, Siding | |
| The Siding Store, Inc | 408 Norwich Road | Plainfield | CT | 06374 | (888) 867-1954 | Website | Roofing, Siding, Windows/Doors | |
| Thermo Care LLC | 110 Lenox Avenue, Suite 206E | Stamford | CT | 06906 | (203) 595-9321 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Thomas R. Sottile, Inc. | 47 Larkin Street | Stamford | CT | 06907 | (203) 223-6630 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Thomaston Comfort Control, Inc. | 323 South Main Street | Thomaston | CT | 06787 | (860) 283-9939 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| TJ Murphy Plumbing & Heating LLC | 11 Corona Circle | Milford | CT | 06460 | (203) 877-6565 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| TL Home Improvement LLC | 176 Ripton Road | Shelton | CT | 06484 | (203) 870-5582 | Website | Insulation, Siding | |
| TLC Home Remodeling | 18 Bug Hill Road | Monroe | CT | 06468 | (203) 445-1943 | Roofing, Siding | ||
| Toigo HVAC, LLC | 2 Loundsbury Road | Oxford | CT | 06478 | (203) 828-6389 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Tomax Heating & Cooling | 800 North Halzview Road | Orange | CT | 06477 | (203) 298-0756 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Tomified Floors & Remodeling | 32 Shady Brook Lane | Waterbury | CT | 06706 | 2038052434 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Insulation, Plumbing, Windows/Doors | ||
| Toolan Construction | 855 Middlesex Turnpike | Old Saybrooke | CT | 06417 | (860) 391-1339 | Masonry, Roofing | ||
| Top Job Remodeling | 248 Carriage Way | Windsor | CT | 06095 | (860) 573-2225 | Website | Masonry | |
| Torrington Sash & Door Works, Inc. | 218 East Main Street | Torrington | CT | 06790 | (860) 482-5594 | Website | Windows/Doors | |
| Total Comfort Control, LLC | P.O. Box 465 | North Branford | CT | 06471 | (203) 484-9698 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Total Comfort, Inc. | 44 Kenosia Avenue | Danbury | CT | 06810 | (203) 791-2141 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Total Mechanical Systems, LLC | 140 New Britain Avenue | Plainville | CT | 06062 | (860) 314-1518 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Total Plumbing & Heating, Inc | 117 Old Foxon Road | East Haven | CT | 06513 | (203) 481-8111 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Tower Energy, LLC | 80 Town Line Road | Plainville | CT | 06062 | (860) 793-1239 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Town Oil Company, Inc. | 786 Silas Dean Hwy, Suite 1 | Wethersfield | CT | 06109 | (860) 529-6813 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Tracey Energy Services, LLC | 325 Howard Avenue | New Haven | CT | 06519 | (203) 777-5747 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Traditional Floors & Remodeling LLC | 44 Eddy avenue #G-2 | Meriden | CT | 06451 | (203) 537-6071 | Masonry | ||
| Traditional Innovations, LLC | 265 West High Street | East Hampton | CT | 06424 | (860) 267-6611 | Masonry, Siding, Windows/Doors | ||
| Tri Tech Mechanical, LLC | 225 Greenwich Avenue | Stamford | CT | 06902 | (203) 359-3399 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Tri Town Oil Company | Windsor Locks | CT | 06096 | (860) 627-9690 | Boilers/Furnaces | |||
| Tri-City Heating and Cooling LLC | 20 Furniture Row | Milford | CT | 06460 | (203) 303-5700 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Insulation | |
| Troiano Oil Company | 777 Enfield Street | Enfield | CT | 06082 | (860) 745-0321 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Trovarelli Plumbing & Heating, LLC | 110 Far Mill Drive | Stratford | CT | 06614 | (203) 209-7780 | Boilers/Furnaces, Heat Pumps, Plumbing | ||
| Tru-Comfort Heating & Air Conditioning, LLC | 46 Overlook Avenue | Bristol | CT | 06010 | (860) 585-1809 | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | ||
| TSS Construction, LLC | 226 Lisbon Road | Canterbury | CT | 06331 | (860) 548-6617 | Website | Insulation, Masonry, Roofing, Siding, Windows/Doors | |
| Tuscany Design Build | 280 Sand Hill Road | South Windsor | CT | 06074 | (860) 881-1025 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Electrical, Geothermal, Heat Pumps, Plumbing | |
| Tyler Heating, Air Cond. & Refrigeration LLC | 77 Muson Street | Milford | CT | 06461 | (203) 378-4700 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Insulation, Plumbing | |
| Ugo DiGrazia Air Conditioning & Heating, Inc. | 436 Franklin Avenue (rear) | Hartford | CT | 06114 | (860) 296-1281 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Ultimate Construction LLC | 19C Andover Drive | West Hartford | CT | 06110 | (860) 229-2476 | Website | Masonry | |
| Ultimate Heating and Cooling, LLC | 99 Field Road | Cromwell | CT | 06416 | (860) 301-5424 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | ||
| Under Construction Contractors, LLC | 74 Washington Avenue (PO Box 513) | North Haven | CT | 06473 | (203) 239-3600 | Website | ||
| United Mechanical Resources Inc | 125 Research Parkway | Meriden | CT | 06450 | (203) 752-6252 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Up and Over Roofing | 671 Naugatuck Avenue | Milford | CT | 06461 | (203) 874-7644 | Website | Roofing | |
| Uplands Construction Group, LLC | 183 Providence New London Tpke | North Stonington | CT | 06359 | (860) 535-8118 | Insulation, Windows/Doors | ||
| US Insulation Corp. | 24 Andover Drive | West Hartford | CT | 06110 | (860) 829-8881 | Website | HES audit, Insulation | |
| V-Fuel - Bridgeport | 39 Salt Street | Bridgeport | CT | 06605 | (203) 838-0600 | Website | Boilers/Furnaces | |
| Valley Fireplace & Stove LLC | 220 Albany Turnpike | Canton | CT | 06019 | (860) 693-3404 | Website | Masonry, Windows/Doors | |
| Valley Oil | 36 Brownstone Avenue | Portland | CT | 06480 | 866-297-8038 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| Valleyview Windows | P.O. Box 651 | Naugatuck | CT | 06770 | (860) 833-9942 | Website | Siding, Windows/Doors | |
| Victor Perez Windows | 634 Wallingford Road | Wallingford | CT | 06492 | (203) 715-6992 | Website | Windows/Doors | |
| Victory Heating and Cooling, LLC | P.O. Box 1721 | Meriden | CT | 06450 | (203) 715-0553 | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, HES audit, Heat Pumps | ||
| Viglione Heating & Cooling Inc. | 259 Commerce Street | East Haven | CT | 06512 | (203) 467-8388 | Website | Boilers/Furnaces, Central Air Conditioning, Electrical, Heat Pumps | |
| Vik's Exteriors, LLC | 318 Ridge Road | Orange | CT | 06477 | (203) 393-8811 | Website | Masonry, Roofing, Siding, Windows/Doors | |
| Viking Fuel Oil Co., Inc. | 10 Crossroads Plz #7 | West Hartford | CT | 06117 | (860) 233-6225 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Villwell Builders I LLC | 2714 East Main Street | Waterbury | CT | 06705 | (888) 256-3780 | Website | Hazardous Material Abatement | |
| Vintage Restorers, LLC | 249 Route 148 | Killingworth | CT | 06419 | (860) 227-0728 | Masonry, Windows/Doors | ||
| Violette Mechanical | 64 Windsor Avenue | Vernon | CT | 06066 | (860) 870-9276 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Violette Restorations, LLC | 15 Bobwhite Hill | Wethersfield | CT | 06109 | (860) 257-3706 | Roofing, Siding, Windows/Doors | ||
| W.J. Crosby Plumbing & Heating | 146 Francis Street | New Britain | CT | 06053 | (860) 223-6111 | Website | Boilers/Furnaces, Heat Pumps, Plumbing | |
| W.L. Heating & Cooling, LLC | 59 King Spring Road Unit G | Windsor Locks | CT | 06096 | (860) 627-8000 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Watkins Mechanical, LLC | 125 Forbes Street | East Hartford | CT | 06108 | (860) 716-9593 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Weathertite Systems LLC | 45 Great Hill Road | Naugatuck | CT | 06770 | (203) 758-4227 | Website | Insulation, Roofing, Siding, Windows/Doors | |
| West Hartford Windows, LLC | 11 Owings Road | West Hartford | CT | 06107 | (860) 410-6107 | Website | Insulation, Roofing, Siding | |
| West Side Oil Company | 27 Babbs Road | West Suffield | CT | 06093 | (860) 668-4322 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | |
| West State Mechanical, Inc. | 3000 South Main Street | Torrington | CT | 06790 | (860) 482-5919 | Boilers/Furnaces, Central Air Conditioning, Heat Pumps, Plumbing | ||
| Wilcox Energy, Inc. | 1129 Boston Post Road | Westbrook | CT | 06498 | (860) 399-6218 | Website | Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Williams Fuel Oil Co., LLC | 162 East Street | Stafford Springs | CT | 06076 | (860) 684-9123 | Website | Boilers/Furnaces, Heat Pumps | |
| Window World of Connecticut | 409 New State Road | Manchester | CT | 06042 | (860) 643-4568 | Website | Siding, Windows/Doors | |
| Windowland, LLC | 3 Simm Lane | Newtown | CT | 06470 | (203) 270-9829 | Website | Siding, Windows/Doors | |
| Windows Unlimited | 15 Lewis Street, Suite 302 | Hartford | CT | 06103 | (860)286-9840 | Website | Roofing, Siding, Windows/Doors | |
| Windsor Locks Oil | 556 Elm Street, Suite 101 | Windsor Locks | CT | 06096 | (860) 623-1214 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Woodstock Building Associates LLC | 78 Prospect Street | Woodstock | CT | 06281 | (860) 928-0897 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Masonry, Plumbing, Solar | |
| Wragg Well Drilling & Pump Services, LLC | 172 Baker Road | Roxbury | CT | 06783 | (860) 354-1989 | Website | Geothermal, Heat Pumps, Insulation | |
| Wyman Energy Services, Inc. | P.O. Box 2407 | Manchester | CT | 06045 | (860) 643-2453 | Website | Air/Duct Sealing, Boilers/Furnaces, Central Air Conditioning, Heat Pumps | |
| Yankee Home Improvement, Inc. | 82 Industrial Drive | Northampton | MA | 01060 | (413) 341-5259 | Insulation, Roofing, Siding, Windows/Doors | ||
| Yankee Oil, Inc. | 537 Stafford Road | Mansfield | CT | 06250 | (860) 423-9111 | Website | Boilers/Furnaces, Central Air Conditioning | |
| Yankee Remodeler | 95 Truman Street | New London | CT | 06320 | (860) 443-6646 | Website | Siding, Windows/Doors |
Main Office
121 Tremont Street
Hartford CT 06105
P. 860.233.5165
New Haven Office
171 Orange Street Floor 3
New Haven CT 06510
P. 203.789.8690
Bridgeport Office
240 Fairfield Avenue 3rd Floor
Bridgeport CT 06604
P. 203.332.7977
This institution is an equal opportunity provider.