Furnace Replacement Cost in Illinois
Across Illinois, homeowners pay $3,800 to $9,300 for furnace replacement. Climate, labor rates and housing age all move the price. In Illinois's cities, the median home dates to about 1969.
Furnace Replacement Prices in Illinois Cities
| City | Estimate | Heating / cooling degree days |
|---|---|---|
| Chicago | $3,700 to $9,000 | 6,017 / 861 |
| Aurora | $3,800 to $9,300 | 6,255 / 910 |
| Naperville | $5,000 to $12,200 | 5,975 / 938 |
| Joliet | $3,800 to $9,200 | 6,171 / 872 |
| Rockford | $3,200 to $7,700 | 6,496 / 838 |
| Elgin | $3,900 to $9,400 | 6,591 / 807 |
| Springfield | $3,200 to $7,800 | 5,455 / 1,094 |
| Peoria | $3,100 to $7,700 | 5,613 / 1,157 |
| Champaign | $3,200 to $7,900 | 5,656 / 1,072 |
| Waukegan | $3,500 to $8,500 | 6,702 / 683 |
| Cicero | $3,400 to $8,400 | 5,752 / 1,111 |
| Bloomington | $3,500 to $8,500 | 6,022 / 977 |
| Schaumburg | $4,000 to $9,800 | 6,462 / 879 |
| Evanston | $4,300 to $10,500 | 6,365 / 805 |
| Arlington Heights | $4,400 to $10,800 | 6,085 / 933 |
| Bolingbrook | $4,100 to $9,900 | 6,062 / 947 |
| Decatur | $3,000 to $7,400 | 5,443 / 1,115 |
| Palatine | $4,200 to $10,200 | 6,816 / 652 |
| Skokie | $4,100 to $10,000 | 6,365 / 805 |
| Des Plaines | $3,900 to $9,600 | 5,974 / 1,003 |
| Orland Park | $4,100 to $9,900 | 6,040 / 1,119 |
| Oak Lawn | $3,700 to $8,900 | 5,698 / 1,161 |
| Mount Prospect | $4,200 to $10,200 | 6,085 / 933 |
| Berwyn | $3,600 to $8,800 | 5,752 / 1,111 |
| Tinley Park | $4,100 to $9,900 | 6,349 / 858 |
| Wheaton | $4,500 to $11,000 | 5,975 / 938 |
| Normal | $3,400 to $8,300 | 6,022 / 977 |
| Oak Park | $4,300 to $10,500 | 5,752 / 1,111 |
| Hoffman Estates | $4,300 to $10,400 | 6,462 / 879 |
| Downers Grove | $4,500 to $10,900 | 5,975 / 938 |
From 2020 through 2025, NOAA recorded 746 winter storm and ice events, 783 heat events, 440 extreme cold events and 1,773 hail reports in Illinois. Those are the days when emergency HVAC calls pile up.
When Replacement Makes Sense
- The furnace is 15 to 20 years old or more
- A repair quote runs past a third of the cost of a new unit
- Gas or electric bills keep climbing even though usage hasn't changed
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
- A tech found a cracked heat exchanger, or the CO detector has gone off
What Moves the Price
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- BTU size, which should come from a Manual J load calculation
- Single-stage, two-stage or modulating gas valve
- New PVC venting if you move to a condensing model
- Permit and inspection fees, which the local building department sets
- Condition of the existing ductwork and any changes it needs
Common Questions
How long does a furnace replacement take?
A straight swap is usually done in one day, somewhere between 4 and 10 hours. Moving to a condensing furnace with new PVC venting can add a few more.
Is a high-efficiency furnace worth it?
In cold climates, a 95%+ AFUE furnace usually earns back the price difference in lower gas bills. Where winters are mild, the payback can take a very long time.
Other HVAC Prices in Illinois
- Furnace Repair in Illinois
- AC Installation in Illinois
- AC Repair in Illinois
- Heat Pump Installation in Illinois
- Heat Pump Repair in Illinois
- HVAC System Replacement in Illinois
- Ductless Mini-Split Installation in Illinois
- Emergency HVAC Repair in Illinois
- HVAC Tune-Up & Maintenance in Illinois
- Boiler Replacement in Illinois
- Air Duct Cleaning in Illinois
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