AC Replacement Cost in Illinois (2026)
Central air conditioning is sized in tons, and efficiency sets the price per ton. This page adjusts the national ac replacement range for Illinois labor costs, using U.S. Bureau of Labor Statistics wage data for heating, air conditioning, and refrigeration mechanics and installers.
In Illinois, most homeowners pay $7,550 to $11,300 for 3 tons, mid efficiency (16 to 17 SEER2), compared with $6,800 to $10,200 nationally.11% above national
- Illinois typical total$7,550 to $11,300
- National typical total$6,800 to $10,200
- IL heating median wage$77,410/yr
- vs. national median27% above
Your Illinois estimate
- Materials and labor
- Add-ons
- Permit and disposal
Illinois prices: national installed ranges adjusted for Illinois trade wages. Your local quotes may differ.
Illinois ac replacement cost by option
Installed totals for 3 tons, standard conditions and permit and disposal included.
| Option | Illinois | National | Relative |
|---|---|---|---|
| Standard efficiency (14 to 15 SEER2) | $5,850 to $9,300 | $5,300 to $8,400 | |
| Mid efficiency (16 to 17 SEER2) | $7,550 to $11,300 | $6,800 to $10,200 | |
| High efficiency, variable speed (18+ SEER2) | $10,200 to $15,600 | $9,200 to $14,100 |
What's different in Illinois
- Illinois is in the North efficiency region with a 13.4 SEER2 minimum.
- HVAC labor in the Chicago area is among the most expensive in the country.
- Humid summers make dehumidification performance worth checking on any new system.
How the Illinois figure is calculated
Labor is roughly 40% of an installed ac replacement job. The median wage for heating, air conditioning, and refrigeration mechanics and installers in Illinois is $77,410 a year, against a national median of $61,010 (U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025). We apply that 27% above-national difference to the labor share only, which moves the whole installed range by about 11% up. Materials are priced nationally, since they vary far less by state than labor does. Prices inside Illinois still vary by metro area and by contractor. Read the full method.
Sources and method
Wage data: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025 release, SOC 49-9021 (Heating, air conditioning, and refrigeration mechanics and installers), state and national median annual wages. National installed price ranges: HouseMath editorial team, reviewed September 2026.