Best Commercial HVAC Contractors in Hartford, CT
Compare 20 commercial HVAC companies serving Hartford, CT carrying a combined 8,809 Google reviews at an average of 4.8 stars. 6 offer 24/7 emergency response. Local crews service Rooftop Unit (RTU), Boiler, Split System, Heat Pump, and more. Request free quotes and hire the right contractor for your building.
Commercial HVAC Contractors in Hartford
View allTotal Mechanical Systems
Hartford, CT
Total Mechanical Systems | Plainville, CT | 4.8★ (3,248 reviews) | HVAC, plumbing & electrical | 20+ years | 25-mile CT...
Degree Heating and Cooling
Hartford, CT
Glastonbury, CT commercial HVAC contractor with 4.8/5 (1,550 reviews), 30 years in business, servicing RTUs, boilers & V...
A Action Appliance Repair
Hartford, CT
A Action Appliance Repair in Manchester, CT serves Hartford-area residential appliances since 1961. 4.8★ (1,440 reviews)...
SM Mechanical Services LLC
Hartford, CT
SM Mechanical Services LLC — Glastonbury-based commercial HVAC serving Hartford, CT. 4.8★ (676 reviews), 24/7 availabili...
Omni Mechanical Services
Hartford, CT
South Windsor, CT commercial HVAC — RTUs, VRF, boilers & more. 4.9★ (522 reviews), 24/7 emergency service, preventive ma...
Ideal Mechanical Services LLC
Hartford, CT
Ideal Mechanical Services LLC | Tolland, CT | 5-star rated HVAC & plumbing contractor serving Hartford metro within 25 m...
Nutmeg Mechanical Services Inc.
Hartford, CT
Nutmeg Mechanical Services Inc. — Hartford-area commercial HVAC contractor since 1982. 4.7★ (147 reviews), 24/7 emergenc...
Precision Mechanical LLC
Hartford, CT
Precision Mechanical LLC | Manchester, CT — commercial HVAC, boiler service & chillers up to 300 tons. 4.8★ rated, CT DC...
Corbett HVAC Services
Hartford, CT
Corbett HVAC Services — Willimantic, CT — 25+ yrs commercial HVAC, fully licensed, 4.5★ (91 reviews), free quotes, 24/7...
Hi-TECH Mechanical Services LLC
Hartford, CT
Hi-TECH Mechanical Services LLC — West Hartford, CT commercial HVAC. RTUs, boilers, VRF, heat pumps. Owner-led installs....
M.J. Emonds Mechanical Contractors, LLC
Hartford, CT
M.J. Emonds Mechanical Contractors — Glastonbury, CT commercial HVAC since 1995, Trane Comfort Specialist, 4.5★ rating,...
Restaurant Supply Wethersfield Distribution Center
Hartford, CT
Wethersfield, CT commercial HVAC serving Hartford metro — RTUs, boilers, cooling towers & more across restaurants, offic...
Limitless Mechanical Services
Hartford, CT
Limitless Mechanical Services | Manchester, CT — 24/7 commercial HVAC, maintenance plans & gas piping. 5-star rated, fam...
Setpoint Refrigeration LLC
Hartford, CT
Setpoint Refrigeration LLC — Farmington-based commercial HVAC & refrigeration serving Hartford, CT. 5/5 rating, 24/7 eme...
Grainger Industrial Supply
Hartford, CT
Grainger Industrial Supply — Hartford, CT commercial HVAC parts & support for RTUs, chillers, boilers & more. 4.6/5 rati...
Charter Oak Mechanical Services
Hartford, CT
Charter Oak Mechanical Services — Manchester, CT commercial HVAC with 25+ years, A+ BBB rating, 24/7 emergency service,...
Advanced Mechanical Services LLC
Hartford, CT
Farmington, CT commercial HVAC contractor serving Greater Hartford — 30+ yrs experience, state-licensed techs, 24/7 avai...
All State Construction Inc.
Hartford, CT
All State Construction Inc. — Farmington, CT mechanical contractor since 1973. Boiler, chiller, AHU & RTU systems for Ha...
Hartford Freezers
Hartford, CT
Hartford Freezers serves commercial HVAC needs in East Hartford, CT — RTUs, chillers, boilers & more across a 25-mile ra...
United-BIM : BIM Modeling & Coordination Services
Hartford, CT
United-BIM in East Hartford, CT: ISO-certified BIM modeling & MEP coordination, 12+ years, 1,000+ projects, 4.8/5 rated....
Commercial HVAC Services Available in Hartford
Why Choose My HVAC Tech in Hartford?
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Every contractor listed works on commercial buildings — RTUs, chillers, VRF — not residential.
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Frequently Asked Questions — Commercial HVAC in Hartford
How many commercial HVAC contractors are in Hartford, CT?
My HVAC Tech lists 20 commercial HVAC contractors serving Hartford, CT, with a combined 8,809 Google reviews averaging 4.8 stars. 6 of them offer 24/7 emergency service.
How much does commercial HVAC service cost in Hartford?
Commercial HVAC costs in Hartford depend on the system type and scope of work. Routine service calls typically run $150–$400. Preventive maintenance contracts for a single rooftop unit average $200–$500/year. Full system replacements range from $8,000 for small packaged units to $100,000+ for large chiller plants.
How do I find a reliable commercial HVAC contractor in Hartford, CT?
Start by verifying the contractor holds a current state license and carries adequate insurance. Check reviews from other commercial property managers on My HVAC Tech. Ask for references from similar properties (office, retail, industrial). Get at least three written quotes for any major project.
Do Hartford commercial HVAC contractors offer emergency service?
Yes, many commercial HVAC contractors in Hartford offer 24/7 emergency response. Response times vary — the best operators typically arrive within 2–4 hours for critical failures. Always confirm after-hours rates upfront, as emergency service typically carries a surcharge.
What's the best time of year to schedule HVAC maintenance in Hartford?
For cooling systems, schedule spring tune-ups in March–April before peak demand season. For heating systems, fall service in September–October ensures readiness. Scheduling preventive maintenance during off-peak periods gives you faster scheduling and sometimes lower rates.