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Compare HVAC costs in Decatur, IL (2026)
Not sure which option fits? Here's how every HVAC project compares in Decatur — local 2026 estimates plus what each choice is best for. The most budget-friendly option here is Furnace Replacement (from $4,000).
Furnace ReplacementBest value$4,000 – $7,150
Best for: Lowest upfront cost for homes with gas heatTypically $5,600
Central AC Installation$5,000 – $10,700
Best for: Cooling only — pairs with an existing furnaceTypically $7,850
Heat Pump Installation$6,500 – $11,800
Best for: Most efficient; heats and cools in one systemTypically $9,150
Full HVAC System Replacement$7,950 – $14,700
Best for: Best when both heating and cooling are dueTypically $11,350
Often paired with HVAC in Decatur
Homeowners tackling HVAC frequently budget for these too.
Estimates are localized to Decatur (cold climate) using local labor price levels, climate factors and permit fees. Always confirm with local contractors.