Heat pump cost in Montana
Estimated yearly heating and cooling cost for a 2,000 sq ft Montana home: $2,549 with a heat pump, $1,239 with gas heat and AC. 13.95¢ electricity makes the heat pump about $1,310 a year dearer to run in Montana.
What it costs to install
National guides price a 2,000 sq ft air-source heat pump at $10,000–$20,000+ installed; we don't have Montana-specific figures. The tier we'd quote first here (heating climate) is 18–19 SEER2 / 9–10 HSPF2, at $11,000–$18,000+.
Source: HomeGuide, “How much does a heat pump cost?” (2026).
Operating cost vs gas
| Heat pump heat, 7.5 / 9.5 HSPF2 | $2,519 / $1,989 |
| Heat pump cooling, 14.3 SEER2 | $30 |
| Furnace, 95% / 80% AFUE | $1,207 / $1,433 |
| AC at 13.4 SEER2 (North min) | $32 |
| Heat pump vs furnace + AC | $2,549 vs $1,239 |
Running cost penalty: $1,310 a year. The case for a heat pump here rests on replacing two systems with one.
13.95¢/kWh (EIA, July 2026 YTD); gas $0.85/therm (EIA 2025, $8.99/Mcf at 1,062 Btu/ft³). Energy only; estimates.
FAQ
What does a heat pump cost installed in Montana?
National estimate: $10,000–$20,000+ for 2,000 sq ft. Local bids decide it.
What's the break-even power price in Montana?
About 6.7¢/kWh for a 7.5 HSPF2 heat pump against a 95% furnace at $0.85/therm; prices would need to fall about 7.3¢ from Montana's 13.95¢ average. A 9.5 HSPF2 unit would heat for $1,989 a year.
Can I still claim 25C for a heat pump?
The 25C credit ended with 2025: it applied to qualifying heat pumps placed in service through December 31, 2025 (30%, max $2,000 a year), and 2025 claims required a Qualified Manufacturer Identification Number. Nothing federal applies to a 2026 install. Source: IRS: Energy Efficient Home Improvement Credit.
Will a heat pump keep up in a Montana winter?
Standard units lose capacity in deep cold; with 8,550 heating degree days, choose a cold-climate model or keep gas backup.
Montana climate
NOAA's 1991–2020 record: 8,550 HDD and 197 CDD for Montana. That means heating dominates, so winter efficiency decides the outcome. Jan's degree days imply a monthly mean near 23°F (rough approximation); standard heat pumps lose capacity in deep cold and lean on electric backup, so our HSPF2 figures are optimistic here and a cold-climate model is the safer pick.
Size for the winter load and confirm cooling isn't far oversized, or keep a furnace for the coldest days (dual fuel).
Monthly comparison
| Month | HDD | CDD | Heat pump | Furnace + AC |
|---|---|---|---|---|
| Jan | 1306 | 0 | $385 | $184 |
| Feb | 1127 | 0 | $332 | $159 |
| Mar | 1004 | 0 | $296 | $142 |
| Apr | 749 | 0 | $221 | $106 |
| May | 500 | 1 | $147 | $71 |
| Jun | 271 | 19 | $83 | $41 |
| Jul | 98 | 92 | $43 | $29 |
| Aug | 112 | 69 | $44 | $27 |
| Sep | 332 | 14 | $100 | $49 |
| Oct | 712 | 0 | $210 | $101 |
| Nov | 1033 | 0 | $304 | $146 |
| Dec | 1305 | 0 | $384 | $184 |
Nearby states
| State | Heat pump | Furnace + AC | Break-even |
|---|---|---|---|
| Wyoming | $2,466 | $1,573 | 8.8¢ |
| North Dakota | $2,458 | $1,454 | 7.2¢ |
| Idaho | $1,951 | $923 | 5.8¢ |
| South Dakota | $2,448 | $1,285 | 7.2¢ |
| Montana | $2,549 | $1,239 | 6.7¢ |
See also: AC running cost in Montana · heat pump vs gas furnace calculator · heat pump cost by state
Sources: EIA electricity and natural gas prices, NOAA nClimDiv, U.S. DOE regional standards. Model: 2,000 sq ft, average insulation; methodology.