Washington HVAC System Replacement Cost (2026)

How much does hvac system replacement cost in Washington? 2026 ranges run $5.5k–$13.8k (avg $8.3k). Equipment, ductwork, refrigerant, and permits factored in.

2026 HVAC System costs in Washington

National average is $7,500. Washington's regional cost index (1.10×) puts the typical hvac system project at roughly $8,250. Low-end $5,500, high-end $13,750. Central heating and cooling system replacement including labor and materials.

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