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AC Install Cost

AC Replacement Cost in Montana (2026)

$4,000 – $8,450
$0$20k
Lower estimateHigher estimate

Typical installed central AC replacement in Montana. Climate zone 6B · avg. electricity 11.8¢/kWh.

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ItemEstimated range
Central AC unit + coil$1,800 – $4,225
Installation labor$1,200 – $2,535
Permits & misc.$200 – $676
Heat pump alternative$5,400 – $12,450

Costs in major Montana metros

What size do you need in Montana? Climate zone 6B affects sizing. Run the sizing wizard →

What affects AC replacement cost in Montana

Prices in Montana reflect the state’s climate zone (6B), local labor and permit costs, and the size and efficiency of the system you choose. The range above is a typical installed central-AC replacement; heat pumps and full system swaps sit higher.

Frequently asked questions

How much does it cost to replace an AC unit in Montana?

A typical installed central AC replacement in Montana runs roughly the range shown above, depending on tonnage, efficiency, and whether ductwork is included.

Is a heat pump worth it in Montana?

In Montana’s climate, a heat pump can be a strong option; use the sizing wizard to compare heat pump and AC costs for your specific home.

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