HVAC Replacement Cost in Illinois
Estimated 2026 installed range: $3,600 – $8,700
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Open the calculatorCost by system type in Illinois
| Option | Low | High |
|---|---|---|
| Central AC only | $3,600 | $8,700 |
| Furnace only | $3,100 | $8,200 |
| Heat pump | $5,600 | $15,300 |
| Full system (AC + furnace) | $6,600 | $20,400 |
| Full system + ductwork | $9,200 | $28,600 |
Local cost factors
Statewide drivers: Midwest conditions and local labor rates. In Illinois, county health departments enforce strict setback distances.