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Are You Looking for HVAC Contractors in Connecticut?

Explore 212 HVAC businesses across Connecticut, including Bridgeport, Stamford and Milford, offering heating and cooling repairs, installations and maintenance. Read customer reviews, check service coverage and contact suitable contractors about estimates.
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17 reviews
Duct Diagnostics
17 reviews
At Duct Diagnostics, we understand that proper duct cleaning is about more than just dust removal. Our team utilizes proven techniques, certified equipment, and a methodical approach to ensure that your...
Website (888) 382-8363 Call Profile
Not rated yet
Performance Plumbing & Heating
22 Years
Emergency
Not rated yet
We are OSHA-10 certified with a Certificate of Good Standing from the Labor Department.
Connecticut's leading commercial plumbing and HVAC specialists since 2004. OSHA-certified technicians delivering precision installations, emergency repairs, and code-compliant maintenance. Call (860) 496-0168 for expert service.
HVAC Plumbing Pipe Welding
(860) 496-0168 Call Profile
Not rated yet
Atmosphere
28 Years
Not rated yet
We have over 25 years of experience in ventilation system innovation and manufacturing.
Atmosphere delivers high-performance inline fans, controllers, and ventilation accessories to improve indoor air quality. Explore innovative, energy-efficient solutions for homes and businesses across North America.
Dryer Booster Fan Duct Booster Fan Destatification Fans
(203) 222-9463 Call Profile
Andersen Oil
36 Years
Emergency
Not rated yet
Andersen Oil
36 Years
Emergency
Not rated yet
35+ years of local heating system expertise in Southeastern Connecticut
Family-owned HVAC contractor serving Southeastern Connecticut since 1990. Offering heating oil delivery, emergency repairs, and energy-efficient system upgrades with 24/7 availability.
Heating Oil Delivery Emergency Repairs Budget Plans
(860) 464-7628 Call Profile
Benvenuti Oil
50+ Years
Emergency
Not rated yet
Benvenuti Oil
50+ Years
Emergency
Not rated yet
We provide prompt 24/7 emergency service with average response time under 2 hours
Trusted family-owned oil delivery and HVAC service provider in Southeastern Connecticut since 1950. Offering premium Bioheat fuel, equipment installations, and 24/7 emergency heating services.
Heating Oil Delivery HVAC Installations Emergency Repairs
(860) 443-6115 Call Profile
Not rated yet
East River Energy
42 Years
Emergency
Not rated yet
We have over 40 years of experience in residential and commercial energy services.
Trusted heating oil, propane, and HVAC services in Guilford, CT. East River Energy offers 24/7 emergency response and reliable energy solutions for residential and commercial customers.
Heating Oil Delivery Propane Gas Supply HVAC Maintenance
(203) 453-1200 Call Profile
Not rated yet
King Energy Group
43 Years
Not rated yet
Over 40 years of geothermal system design and installation experience
Connecticut's leading geothermal HVAC provider since 1983, offering energy-efficient heating and cooling systems for residential properties in Willington and surrounding areas.
Geothermal Installation System Retrofits Equipment Maintenance
(860) 881-5612 Call Profile
Not rated yet
TNT Refrigeration
25 Years
Emergency
Not rated yet
Over 20 years of experience in HVAC and refrigeration services
TNT Refrigeration offers 24/7 HVAC and refrigeration services in Litchfield, CT. Specializing in installation, repair, and maintenance since 2001. Call (860) 567-2124 for reliable solutions.
Air Conditioning Heating Refrigeration
(860) 567-2124 Call Profile
Not rated yet
Fontaine Mechanical
40 Years
Emergency
Not rated yet
35+ years serving Connecticut with specialized HVAC expertise
Trusted HVAC and plumbing services since 1986. 24/7 emergency support, free quotes, and energy-efficient solutions for Connecticut homes and businesses. Licensed technicians serving 4,000+ clients.
Plumbing Services Heating Installation Cooling Systems
(860) 589-4900 Call Profile
Not rated yet
Modern Mechanical Systems
50 Years
Emergency
Not rated yet
45+ years of mechanical contracting expertise since 1976
Connecticut's leading HVAC and mechanical contractors since 1976. Specializing in commercial heating, cooling, plumbing, and medical gas systems with 24/7 emergency service.
HVAC Installation Plumbing Systems Medical Gas Piping
(860) 677-2222 Call Profile