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Maine · checked October 20, 2026
Air-source heat pump rebates in Maine
1 program pays toward an air-source heat pump in Maine right now, with 7 separate offers between them. The largest stated amount is $9,000, from Efficiency Maine whole-home heat pump rebates (Ducted whole-home, low income). The federal 25C credit for this upgrade ended on December 31, 2025, so the state and utility money below is what is left.
What Maine pays for heat pumps
Efficiency Maine whole-home heat pump rebates Open
Run by Efficiency Maine Trust · statewide
- Ducted whole-home, any income: $3,000
- Ducted whole-home, moderate income: $6,000 moderate income
- Ducted whole-home, low income: $9,000 low income
- Other whole-home systems, any income: $1,000 per rebate-eligible outdoor unit
- Other whole-home systems, moderate income: $2,000 per outdoor unit moderate income
- Other whole-home systems, low income: $3,000 per outdoor unit low income
- Limited-time bonus: +$500 per housing unit for whole-home upgrades completed and claimed March 1 – December 31, 2026
Conditions on the program page: Heat pumps will be the primary heating system; Lifetime rebate limits apply; Single-wide mobile homes may qualify for up to $13,900 (not eligible for the bonus); Low income: household member enrolled in HEAP, SNAP, TANF or MaineCare; moderate income: AGI up to $70,000 single or $100,000 joint (Efficiency Maine definitions).
Source: Efficiency Maine: Whole-home heat pump rebates; Efficiency Maine: Insulation rebates (income tier definitions). Last checked October 20, 2026. Official program page.
Worked example: one Maine home
Take a 3-ton air-source system (2 outdoor units) replacing oil heat. These are example inputs, not typical prices. Each program's own rule gives the amounts below; where one program has several tiers only the largest one counts, separate programs add up, and a percentage offer with no cost entered is shown at its ceiling.
| Utility | Not income-qualified | Moderate income | Low income | Replacing baseboard |
|---|---|---|---|---|
| Any Maine utility (Efficiency Maine is statewide) | $3,500 | $6,500 | $9,500 | $3,500 |
For a household that is not income-qualified, the example comes to $3,500, made of $3,000 from Efficiency Maine heat pumps (Ducted whole-home, any income) plus $500 from Efficiency Maine heat pumps (Limited-time bonus). A household that meets a program's low-income definition gets $6,000 more in the same example, because 2 offers are paid at the income-qualified level.
Who can use these Maine offers
Every household in Maine covered by Efficiency Maine can apply; the offers are not limited to one utility's territory. The earliest end date among these offers is December 31, 2026.
Federal credit and state IRA rebates
The Energy Efficient Home Improvement Credit (IRC §25C) paid 30% of cost, up to $2,000 a year (heat pumps, heat pump water heaters, biomass stoves and boilers combined). The IRS page says: “can claim the credit for improvements made through December 31, 2025.” Not allowed for property placed in service after December 31, 2025. Source: IRS: Energy Efficient Home Improvement Credit, 26 U.S.C. §25C, as amended by Public Law 119-21 (July 4, 2025). See what the credit covered and when it ended.
Maine IRA Home Energy Rebates: Limited. HEAR ($35.7 million) is active only for heat pumps in new affordable multifamily housing and single-wide mobile homes. HER ($35.9 million) is conditionally awarded. Efficiency Maine is reviewing a June 1, 2026 federal Program Notice. Source: Efficiency Maine: IRA Home Energy Rebates.
How Maine compares
4 of the other 14 covered states list a larger top amount for heat pumps. Open elsewhere: Massachusetts $16,000; Rhode Island $11,500; Connecticut $10,000; New Hampshire $10,000; North Carolina $8,000; Vermont $4,000; California $3,000; Oregon $3,000; Arizona $1,125; Texas $950; Wisconsin $900; Michigan $350; Florida $200. No open, sourced offer is listed in 1 other covered state (Pennsylvania). Compare them on the air-source heat pump rebates by state page.
Other upgrades in Maine: heat pump water heater, insulation and air sealing, home EV charger. Background: how rebates stack and the federal credit status.
Rebates are set by each program and can change or close without notice; the program's own page and application decide what is paid. This page is information, not tax, legal or financial advice. Amounts last checked October 20, 2026.