Independent guide
AC repair in Chicago
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Before you hire in Chicago
Check the contractor's license
Chicago licenses contractors through its Department of Buildings. The department says a City of Chicago general contractor license is required for most types of building construction, alteration, repair and demolition work. Ask the contractor which license covers your job, then look it up in the city's search.
City of Chicago license search
Source: chicago.gov. Checked Oct 19, 2026.
Replacing the furnace or AC?
The city says that complete replacement of a heating or cooling appliance requires a building permit, with exceptions. Read the exceptions on the city's page before you start.
Chicago Department of Buildings
Source: chicago.gov. Checked Oct 19, 2026.
If the heat is out and it's cold
Warming centers
In a January 2026 notice, the City of Chicago said it coordinates a network of 284 public facilities available for warming.
Source: chicago.gov. Checked Oct 19, 2026.
Carbon monoxide alarms
The Chicago Department of Buildings explains carbon monoxide alarms for your home. Carbon monoxide is odorless and colorless, and it can kill you.
Chicago Department of Buildings
Source: chicago.gov. Checked Oct 19, 2026.
Yearly heating check
The Illinois State Fire Marshal advises having heating equipment and chimneys cleaned and inspected every year by a qualified professional.
Source: sfm.illinois.gov. Checked Oct 19, 2026.
Help with the energy bill
Help with heating bills (LIHEAP)
Illinois runs the Low Income Home Energy Assistance Program. It helps eligible low-income households pay for home energy services, mainly heating in winter.
Source: dceo.illinois.gov. Checked Oct 19, 2026.
Utility programs
Peoples Gas home energy rebates
Peoples Gas offers rebates to owners of single-family homes, two-flats and individually metered condos or townhomes. The program lists furnaces, HVAC and smart thermostats.
Source: peoplesgasdelivery.com. Checked Oct 19, 2026.
121nights a year drop to 32°F or below at Chicago O'Hare Intl Airport. NOAA U.S. Climate Normals 1991–2020. The station is the airport, not the city center.
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