HVAC Replacement Cost in Washington
Estimated 2026 installed range: $4,500 – $10,900
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Open the calculatorCost by system type in Washington
| Option | Low | High |
|---|---|---|
| Central AC only | $4,500 | $10,900 |
| Furnace only | $3,800 | $10,200 |
| Heat pump | $7,000 | $19,200 |
| Full system (AC + furnace) | $8,300 | $25,600 |
| Full system + ductwork | $11,500 | $35,800 |
Local cost factors
Statewide drivers: West conditions and local labor rates. In Washington, wet soils and strict local health rules drive design costs.