HVAC in Illinois

95 HVAC contractors in 66 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 Illinois?

We list 95 HVAC contractors in Illinois, across 66 {cities.length === 1 ? 'city' : 'cities and towns'}; the most are in Pekin (7), Naperville (5), Champaign (4). 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).

By City

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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?

Habegger

1050 West Bloomington Road, Champaign

HVACPhone listedWebsiteHours listedSource: OSM

Mike Williams

1414 South Neil Street, Champaign

HVACPhone listedWebsiteSource: OSM

Cleaning Wizard

3900 North Pine Grove Avenue, Chicago

HVACPhone listedHours listedSource: OSM

GHC Mechanical

990 Pauly Drive, Elk Grove Village

HVACWebsiteHours listedSource: OSM

HAS Services

9306 West Dralle Road, Frankfort

HVACPhone listedWebsiteHours listedSource: OSM

Duden & Silver

103 North Main Street, Gifford

HVACPhone listedWebsiteSource: OSM

Entec

Mattoon

HVACSource: OSM

All Temp

124 East Liberty Street, Wauconda

HVACPhone listedWebsiteSource: OSM

Assured Air

8440 South Archer Avenue, Willow Springs

HVACPhone listedWebsiteHours listedSource: OSM

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

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