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Maine · checked October 20, 2026
Heat pump water heater rebates in Maine
1 program pays toward a heat pump water heater in Maine right now, with 2 separate offers between them. The largest stated amount is $1,200, from Efficiency Maine heat pump water heater discount (Instant discount). 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 pump water heaters
Efficiency Maine heat pump water heater discount Open
Run by Efficiency Maine Trust · statewide · ends October 30, 2026
- Instant discount: $1,200 instant discount at participating retailers and distributors
- Mail-in: $1,150 mail-in rebate when bought without an instant discount
Conditions on the program page: New ENERGY STAR unit installed in Maine, any tank size; One rebate or discount per address per calendar year; Mail-in within six months with a retailer or wholesaler receipt; A registered vendor is not required.
Also on the page: Shelf prices after the discount on September 11, 2026: $349 at Home Depot and Granite Group, $350 at Lowe's, $399 at Selco (50-gallon units).
Source: Efficiency Maine: Heat pump water heater program. Last checked October 20, 2026. Official program page.
Worked example: one Maine home
Take one heat pump water heater replacing an electric tank. 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 |
|---|---|---|---|
| Any Maine utility (Efficiency Maine is statewide) | $1,200 | $1,200 | $1,200 |
For a household that is not income-qualified, the example comes to $1,200, made of $1,200 from Efficiency Maine water heaters (Instant discount). None of the open offers has a separate income-qualified amount, so every household gets the same figure.
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 October 30, 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 (shared with heat pumps). 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 pump water heaters. Open elsewhere: California $4,000; Connecticut $1,900; North Carolina $1,750; Massachusetts $1,500; Oregon $1,200; Texas $1,000; Vermont $1,000; New Hampshire $900; Rhode Island $625; Arizona $500; Pennsylvania $500; Wisconsin $300. No open, sourced offer is listed in 2 other covered states (Florida, Michigan). Compare them on the heat pump water heater rebates by state page.
Other upgrades in Maine: air-source heat pump, 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.