No live state program. Flathead Electric Cooperative offers $800 for a ductless heat pump replacing electric-resistance heat. NorthWestern Energy runs E+ rebates that vary by cycle; confirm current amounts.
Utility programs in Montana
These are the named utility and ratepayer rebates on file for Montana. You claim the one that serves your address, not the total. Each card carries the program’s own terms: what equipment qualifies, who is eligible, what the cap actually is, and whether it stacks.
NorthWestern Energy
northwesternenergy.com
Varies
by measure
You claim it after installVaries by measure
E+ air-source and ductless heat pump rebates vary by HSPF tier. The prior program cycle closed June 30, 2026; confirm the current cycle amount before quoting.
Equipment that qualifies
E+ air-source and ductless rebates vary by HSPF tier.
Who qualifies, and the cap
NorthWestern Energy Montana customers. The prior E+ program cycle closed June 30, 2026; confirm the current cycle amount before quoting.
Flathead Electric Cooperative members replacing electric-resistance primary heat. $800.
Stacking
Rebate plus 3% financing (loan, separate from the rebate).
What your system should be sized for
A heat pump in Montana should carry the house on the coldest design day, not the average one. These are the winter design temperatures our engine sizes against, in AHRI heating region V (7,200 heating degree days at the Billings reference metro).
City
Design temp
Climate zone
Basis
Billings
-10°F
6B
estimated
Missoula
-8°F
6B
estimated
Great Falls
-16°F
6B
estimated
Rebate amounts are estimates and subject to change. Verify current program terms and eligibility before quoting a final net price.
Eligibility varies by income, equipment efficiency, utility territory, and program funding availability.
Federal 25C/25D tax credits expired 12/31/2025. Federal DOE HEAR/HOMES administration ended 5/29/2026. State-run HEAR pathways that still print a dollar on an official page are listed with that URL and fetch date.
After-install rebates are claimed by the homeowner after installation and are not guaranteed at the point of sale.