HVAC in Connecticut

33 HVAC contractors in 26 cities and towns. Heating, ventilation, air conditioning and refrigeration installers and service companies, including rooftop units and service agreements. Facilities usually schedule them at least twice a year, before cooling and heating seasons.

How Many HVAC Contractors Are in Connecticut?

We list 33 HVAC contractors in Connecticut, across 26 {cities.length === 1 ? 'city' : 'cities and towns'}; the most are in Middletown (3), Portland (2), Meriden (2). Facilities usually schedule HVAC contractors at least twice a year, before cooling and heating seasons. Ask each for a written quote with every fee included and compare the totals.

Updated November 6, 2026 · Source: OpenStreetMap (refreshed November 6, 2026).

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Before You Hire

  1. Do you take commercial work, and do you service buildings like ours?
  2. Can you send a certificate of insurance naming us as additional insured?
  3. Are your technicians EPA Section 608 certified to handle refrigerant?
  4. Do you service our equipment type and brand (rooftop units, chillers, boilers)?
  5. What does a service agreement include, visit by visit?

W.J Dornfeld Company

78 Saltonstall Parkway, East Haven

HVACPhone listedWebsiteHours listedSource: OSM

Taylor Energy

152 Broad Brook Rd, East Windsor

HVACPhone listedWebsiteHours listedSource: OSM

Absolute Air

1116 Portland Cobalt Road, Portland

HVACSource: OSM

Ductworks

175 Spring Street, Southington

HVACPhone listedWebsiteSource: OSM

HVAC in every state · Questions to Ask Before Hiring: HVAC

Listings: © OpenStreetMap contributors (ODbL) · Data last updated November 6, 2026 · Sources & method