Illinois Furnace Replacement Cost (2026)
How much does furnace replacement cost in Illinois? 2026 ranges run $2.6k–$7.9k (avg $4.7k). AFUE rating, fuel type, and ductwork condition included.
2026 Furnace costs in Illinois
National average is $4,500. Illinois's regional cost index (1.05×) puts the typical furnace project at roughly $4,725. Low-end $2,625, high-end $7,875. Furnace replacement including equipment and professional installation.
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