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Compare 64 Verified HVAC Companies in Connecticut

Business profiles help you review HVAC services and available company details in one place. Explore 64 verified HVAC business profiles in Connecticut, including New Milford, Bridgeport and Glastonbury, consider customer feedback and contact suitable contractors.
Avon (1)
Bloomfield (2)
Bridgeport (3)
Bristol (1)
Brookfield (1)
Brooklyn (1)
Cheshire (1)
Clinton (1)
Danbury (1)
East Hartford (1)
East Lyme (1)
East Windsor (1)
Enfield (1)
Fairfield (1)
Glastonbury (3)
Guilford (2)
Hamden (1)
Killingworth (1)
Ledyard (1)
Manchester (2)
Meriden (1)
Middlefield (1)
Middletown (1)
Milford (3)
Monroe (1)
New Haven (1)
New London (1)
New Milford (5)
Norwalk (1)
Norwich (1)
Oxford (1)
Plainville (1)
Portland (1)
Preston (1)
Putnam (1)
Shelton (1)
South Windsor (1)
Southington (1)
Stratford (2)
Torrington (1)
Waterford (1)
Watertown (1)
West Hartford (2)
West Haven (2)
Westbrook (1)
Wethersfield (1)
Willington (1)
Windsor Locks (1)
6 reviews
Air Specialties
50+ Years
Emergency
6 reviews
Family-owned & operated with over 65 years of local experience
Trusted HVAC contractor in New Haven, CT. Air Specialties offers heating, cooling, and maintenance services with over 65 years of experience. NATE-certified technicians, 24/7 emergency service, and free estimates.
Furnace Maintenance AC Repair Boiler Services
(203) 884-8639 Call Profile
5 reviews
Onofreo Home Comfort Systems
22 Years
Emergency
5 reviews
24/7 emergency HVAC services with rapid response times
Trusted HVAC contractor serving Milford, CT. Specializing in heating, air conditioning, ductless systems, and geothermal solutions. 24/7 emergency service, free estimates, and financing options available.
Heating Installation Air Conditioning Repair Ductless HVAC
(203) 301-4151 Call Profile
4 reviews
Y & M Air Duct Service
4 reviews
We are a locally family-owned business with 15+ years of HVAC cleaning experience
Professional air duct and dryer vent cleaning services in Hartford, CT. UV light disinfection and non-toxic solutions. Free estimate available. Serving all of Connecticut.
Air Duct Cleaning Dryer Vent Cleaning UV Light Installation
(860) 400-5600 Call Profile
1 review
S K Mechanical
Emergency
1 review
We offer 25+ years of mechanical service expertise
S K Mechanical provides expert HVAC services in Manchester, CT, specializing in boiler and AC repair, installation, and maintenance with 24/7 emergency support.
HVAC Repair Boiler Installation Emergency Service
(860) 533-2320 Call Profile
5 reviews
Duct Clean Effects
14 Years
5 reviews
We offer 100% satisfaction guarantee on all duct cleaning services
Connecticut's #1 air duct cleaning service since 2012. Certified technicians using advanced equipment for residential and commercial HVAC cleaning. Serving Hamden, New Haven, and surrounding areas with 100% satisfaction guarantee.
Residential Duct Cleaning Commercial Duct Cleaning Dryer Vent Cleaning
(203) 823-5554 Call Profile
5 reviews
East River Energy
42 Years
Emergency
5 reviews
We provide 24/7 emergency response services for urgent heating needs
Trusted HVAC, heating oil, and propane services in Guilford, CT since 1984. East River Energy offers reliable delivery, emergency response, and HVAC solutions for residential and commercial customers.
Heating Oil Delivery Propane Gas Services HVAC Maintenance
(203) 453-1200 Call Profile
7 reviews
Alternative Heating & Supplies
24 Years
7 reviews
Family-owned since 2002 with deep industry experience
Trusted provider of wood boiler parts and maintenance solutions in Oxford, CT. Family-owned since 2002, offering expert guidance, fast shipping, and high-quality products for energy-efficient heating systems.
Wood Boiler Installation Furnace Maintenance Heat Exchanger Sizing
(203) 881-1602 Call Profile
Not rated yet
Clearwater Industries
34 Years
Emergency
Not rated yet
We have over 30 years of experience in industrial water treatment
ClearWater Industries offers specialized industrial water treatment solutions for boilers, cooling towers, and closed loop systems across Connecticut and neighboring states.
Boiler Water Treatment Cooling Tower Treatment Closed Loop Systems
(203) 944-0066 Call Profile
Not rated yet
Noble Fire Brick
50+ Years
Emergency
Not rated yet
We offer 40+ years of specialized expertise in industrial furnace design and maintenance
Noble Fire Brick provides customized industrial furnaces, ovens, and thermal processing equipment since 1972. Specializing in design, construction, repairs, and maintenance for global industries.
Furnace Design Thermal Processing Emergency Repairs
(860) 623-9256 Call Profile
Not rated yet
ETTER Engineering
50+ Years
Not rated yet
We have over 85 years of experience in combustion engineering and process heating.
Since 1940, ETTER Engineering has provided custom combustion systems, safety audits, and gas-to-oil conversions. Trusted expertise in industrial heating solutions for efficiency and compliance.
Combustion Services Safety Audits Oil to Gas Conversions
(860) 584-8842 Call Profile