Efficiency Maine: up to $9,000 whole-home (income-tiered; $1,000-$3,000/unit standard). Cold-climate qualified.
Program source: efficiencymaine.com
Utility programs in Maine
These are the named utility and ratepayer rebates on file for Maine. 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.
Central Maine Power
efficiencymaine.com
$9,000
maximum
$3,000 per indoor unit
You claim it after installPaid per indoor unit
Efficiency Maine territory; $1,000-$3,000/unit up to $9,000.
Equipment that qualifies
Efficiency Maine qualifying cold-climate heat pump; whole-home tier.
Who qualifies, and the cap
Central Maine Power territory (Efficiency Maine administered). Up to $9,000 whole-home.
Stacking
Statewide Efficiency Maine program; $1,000-$3,000 per unit up to $9,000 whole-home. Income-eligible tiers higher.
Versant Power (Emera Maine)
efficiencymaine.com
$9,000
maximum
$3,000 per indoor unit
You claim it after installPaid per indoor unit
Efficiency Maine territory.
Equipment that qualifies
Efficiency Maine qualifying cold-climate heat pump; whole-home tier.
Who qualifies, and the cap
Versant Power (Emera Maine) territory. Up to $9,000 whole-home.
Stacking
Same statewide Efficiency Maine program as CMP.
What your system should be sized for
A heat pump in Maine 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 (7,100 heating degree days at the Portland reference metro).
City
Design temp
Climate zone
Basis
Portland
5°F
5A
estimated
South Portland
5°F
5A
estimated
Lewiston
3°F
6A
estimated
Auburn
3°F
6A
estimated
Bangor
-1°F
6A
estimated
Biddeford
6°F
5A
estimated
Sanford
5°F
5A
estimated
Saco
6°F
5A
estimated
Westbrook
5°F
5A
estimated
Waterville
1°F
6A
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.