HVAC Replacement Cost in Montana
Estimated 2026 installed range: $3,500 – $8,500
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Open the calculatorCost by system type in Montana
| Option | Low | High |
|---|---|---|
| Central AC only | $3,500 | $8,500 |
| Furnace only | $3,000 | $8,000 |
| Heat pump | $5,500 | $15,000 |
| Full system (AC + furnace) | $6,500 | $20,000 |
| Full system + ductwork | $9,000 | $28,000 |
Local cost factors
Statewide drivers: West conditions and local labor rates. In Montana, remote sites and short construction seasons raise labor costs.