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Commercial HVAC Contractors in Connecticut

Browse Connecticut's top-rated commercial HVAC companies. Whether you manage a single office building or a portfolio of industrial facilities, My HVAC Tech connects you with licensed, insured contractors who specialize in commercial systems.

Verified reviewsLicense & insurance checkedServing all of CT

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Featured Contractors in Connecticut

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Family Mechanical Inc

Google Reviewed

New Haven, CT

on Google

Family Mechanical Inc — Stratford, CT mechanical contractor serving New Haven area buildings within 25 miles. 5-star rat...

Johnstone Supply

Google Reviewed

Hartford, CT

RTU · Split System · Boiler+3
on Google

Johnstone Supply — wholesale HVAC distributor in Hartford, CT serving licensed contractors within 25 miles. Stocks comme...

Hi-TECH Mechanical Services LLC

Google Reviewed

Hartford, CT

Split System · Boiler · Heat Pump+3
on Google

Hi-TECH Mechanical Services LLC — West Hartford, CT commercial HVAC. RTUs, boilers, VRF, heat pumps. Owner-led installs....

Ideal Mechanical Services LLC

Google Reviewed

Hartford, CT

on Google

Ideal Mechanical Services LLC | Tolland, CT | 5-star rated HVAC & plumbing contractor serving Hartford metro within 25 m...

United Rentals - Climate Solutions

Google Reviewed

New Haven, CT

on Google

North Haven, CT commercial HVAC rental specialists serving New Haven's 25-mile radius — 5-star rated for fast spot coole...

Logan Commercial Service Inc.

Google Reviewed

New Haven, CT

on Google

Logan Commercial Service Inc. in Milford, CT offers commercial HVAC & refrigeration service with rapid response and 5-st...

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Commercial HVAC Services in Connecticut

Frequently Asked Questions — Commercial HVAC in Connecticut

How do I find a licensed commercial HVAC contractor in Connecticut?

Connecticut requires commercial HVAC contractors to hold a state contractor's license. Use My HVAC Tech to filter for verified contractors — we confirm license numbers directly with the CT licensing board. Always verify that the contractor carries general liability insurance and workers' compensation before signing a contract.

What should I expect to pay for commercial HVAC service in Connecticut?

Commercial HVAC costs in Connecticut vary significantly based on system type, building size, and service complexity. Routine maintenance contracts typically run $150–$400 per unit per year. Emergency service calls average $300–$800 for diagnosis and basic repairs. System replacements for rooftop units range from $8,000–$35,000 depending on tonnage.

Do commercial HVAC contractors in Connecticut offer 24/7 emergency service?

Many commercial HVAC contractors in Connecticut offer 24/7 emergency response, particularly those serving healthcare, food service, and data center clients. Use the "Emergency Service" filter on My HVAC Tech to find contractors with confirmed after-hours availability.

What commercial HVAC certifications should I look for in Connecticut?

Look for NATE (North American Technician Excellence) certified technicians, which validates hands-on HVAC competency. For refrigerant handling, EPA Section 608 certification is federally required. In Connecticut, commercial work typically requires a state contractor license. Manufacturer certifications from Carrier, Trane, or Lennox indicate authorized service capability.