Cold climate
HVAC services in Illinois
Illinois winters drive furnace and boiler demand, and Chicago-area humid summers make AC essential.
- ZIP codes covered
- 757
- Cities and towns
- 519
Heating and cooling in Illinois
Heating dominates the energy bill. Gas furnaces and boilers are the norm, with summer AC and growing use of cold-climate heat pumps.
Illinois doesn't license HVAC contractors statewide. Chicago requires permits through the Department of Buildings, and suburbs and downstate cities set their own contractor registration rules.
Chicago's bungalow belt, two-flats and courtyard buildings often heat with boilers and radiators or older gravity-era ducts, while suburbs mostly use gas furnaces and central AC. Polar vortex events, like the January 2019 cold that reached −23°F at O'Hare, push heating systems to their limit.
Downstate Illinois, including Springfield, Peoria and the southern counties, is warmer and more humid in summer than Chicago, with shorter winters. Across the state, most single-family homes use a gas furnace and central AC, and spring severe storms can damage outdoor units.
Most common needs in a cold climate
- No-heat furnace and boiler calls
- Venting blocked by snow and ice
- Winter humidity
- Cold-climate heat pump retrofits
Illinois city guides
Local details on housing, utilities and permits.
More covered areas in Illinois
Contractors also take calls in these communities, among many others. Check your ZIP above to confirm.
- Bloomington · McLean Co.
- Schaumburg · Cook Co.
- Palatine · Cook Co.
- Joliet · Will Co.
- Carol Stream · DuPage Co.
- East Saint Louis · St. Clair Co.
- Belleville · St. Clair Co.
- Champaign · Champaign Co.
- Elgin · Kane Co.
- Decatur · Macon Co.
- Des Plaines · Cook Co.
- Oak Park · Cook Co.
- Waukegan · Lake Co.
- Arlington Heights · Cook Co.
- Hoffman Estates · Cook Co.
- Plainfield · Will Co.
- Crystal Lake · McHenry Co.
- Melrose Park · Cook Co.
- Bolingbrook · Will Co.
- Skokie · Cook Co.
- Orland Park · Cook Co.
- Oak Lawn · Cook Co.
- Tinley Park · Cook Co.
- Wheaton · DuPage Co.
- Downers Grove · DuPage Co.
- Glenview · Cook Co.
- Quincy · Adams Co.
- Northbrook · Cook Co.
- Saint Charles · Kane Co.
- Elk Grove Village · Cook Co.
- North Chicago · Lake Co.
- Glen Ellyn · DuPage Co.
- Mchenry · McHenry Co.
HVAC services available in Illinois
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