A qualifying Maine heat pump may earn up to $9,000 through the standard Efficiency Maine rebate. A separate mobile-home initiative offers up to $12,900 for some income-eligible homeowners.
Standard-program limits are $9,000 for low-income households, $6,000 for moderate-income households, and $3,000 at any income.
Eligible whole-home projects may receive a temporary $500 bonus if the project is completed and the rebate claim is emailed or postmarked between March 1 and December 31, 2026.
Last reviewed: August 6, 2026.
Here’s what to know about the Maine heat pump rebate before you talk to a contractor.
| Current Rule | What You Need to Know |
| Standard maximum | Up to $9,000 for low-income households, $6,000 for moderate-income households, or $3,000 at any income |
| Temporary 2026 bonus | $500 for eligible whole-home projects completed and claimed from March 1 through December 31, 2026 |
| Contractor requirement | Standard projects must use an Efficiency Maine Residential Registered Vendor |
| Heating requirement | The heat pump must serve as the home’s primary heating system |
| Existing boiler or furnace | Most non-ducted projects may keep one for emergency backup only. Eligible ducted whole-home projects require removal of an existing fossil-fuel forced-air furnace. |
| Claim deadline | Submit the claim within six months of project completion |
| Separate programs | Separate programs are available for some mobile homes and income-qualified households. |
The right pathway depends on your income, property type, existing heating system, and project scope.
If you own a single-family home, a two-unit building, a condo, or certain small mixed-use properties, this is the rebate most people use. It covers both existing homes and new construction, provided your system meets Efficiency Maine’s current equipment and heating rules.
One exception to note: a home that had a natural-gas utility account before the upgrade does not qualify under the current standard criteria.
If you qualify as low- or moderate-income, you can receive a higher rebate. To get approved, you’ll go through Efficiency Maine’s income verification process.
Low-income eligibility is usually based on whether you participate in a qualifying assistance program. Moderate-income eligibility is usually based on your tax-filing income.
These rebates also require that the home be your principal residence, and the income thresholds and required documents can change.
A separate $3,000 supplemental rebate may cover one eligible single-zone heat pump in a verified low-income, owner-occupied principal residence. It counts toward the home’s $9,000 lifetime heat pump rebate limit.
If you own a single-wide mobile home in a currently eligible town, you may qualify for a separate program instead of the standard rebate. The Mobile Home Initiative currently offers $12,900 to income-eligible homeowners who replace propane or kerosene heat with a ducted heat pump.
The home must be preapproved and pass an in-home assessment, a participating installer must complete the work, and the existing heating system must be removed. Homeowners pay a $2,000 project contribution up front or may finance it through a 0% loan that includes a $500 origination fee.
If you’re a low-income homeowner, MaineHousing may be able to help with heating-system repair or replacement through your local community action agency.
Maine’s active federal HEAR program currently supports qualifying single-family mobile homes and new affordable multifamily housing. It is not a separate, general heat-pump rebate for every Maine homeowner.
Eligible ducted whole-home systems receive one rebate per housing unit: $9,000, $6,000, or $3,000, depending on income. Other whole-home systems use the per-outdoor-unit amounts below, with the same lifetime limits.
| Income Category | Rebate per Eligible Outdoor Unit | Lifetime Limit | Income Verification? | Applies to Main Residence? |
| Low income | $3,000 | $9,000 | Yes | Yes |
| Moderate income | $2,000 | $6,000 | Yes | Yes |
| Any income | $1,000 | $3,000 | No | No under the current standard criteria |
Doing a whole-home heat pump upgrade in 2026? You could get an extra $500 per housing unit on top of your rebate. The project must be completed and the rebate claim emailed or postmarked between March 1 and December 31, 2026.
One exception: this bonus doesn’t apply to the mobile-home initiative.
Eligibility depends on both the exact equipment and how the system is designed to heat the home.
A single-zone outdoor unit can be rebate-eligible as part of a qualifying whole-home project or the separate low-income supplemental pathway. The model and the overall installation must meet the applicable program rules.
Multi-zone systems work a bit differently. The capacity can help your project meet the whole-home sizing rules, but the multi-zone outdoor unit itself doesn’t count as a rebate-eligible unit.
If you’re considering a dual-fuel setup, pairing a heat pump with a fossil-fuel furnace, know that these aren’t eligible under the current standard rules.
Non-ducted systems must cover at least 80% of peak heating load with heat pumps and 100% with permitted supplemental heat. Eligible ducted whole-home systems must cover 100% with the ducted heat pumps.
What this means for you: ask how the heating load was estimated and make sure the vendor uses a method accepted by Efficiency Maine rather than an informal rule of thumb.
Under non-ducted rules, a boiler or furnace may remain for emergency backup only. Ducted whole-home projects require removal of an existing fossil-fuel forced-air furnace.
There are steps you can take, like lowering the thermostat on the old system or cutting its regular power supply. Your registered vendor should document exactly how this is set up.
Confirm the correct program and any required approval before installation.
Efficiency Maine says to allow six weeks for rebate processing. Incomplete information can delay or disqualify the claim.
The six-week period begins after Efficiency Maine receives a complete claim. It does not necessarily begin on the installation date.
These are broad planning ranges, not an official statewide average.
| Project Scope | Planning Range Before Rebates |
| One-zone addition | $3,500 to $7,500 |
| Several-zone ductless system | $8,000 to $18,000 |
| Ducted whole-home system | $12,000 to $35,000 |
| Mixed project with electrical or weatherization work | $15,000 to $40,000 |
Use this formula when comparing proposals:
Contractor price − eligible program rebate − any separately permitted incentive = estimated remaining project cost
Yes, a cold-climate heat pump can heat a Maine home well, as long as the system is sized and designed for the building.
Where the outdoor unit sits matters too; it needs clear airflow and enough height to stay above the snow, and your indoor setup needs to account for closed-off bedrooms or rooms separated from the main living space.
Good insulation and air sealing help here. They reduce the home’s heating load and can make it easier for a correctly sized system to maintain comfort in cold weather.
Replacing oil, propane, or kerosene heat shifts more cost to electricity, so your electric bill will usually rise even if total annual heating costs fall.
Common issues include:
Payments can also be reduced if the housing unit already used part of its lifetime Maine heat pump rebate limit.
Start with the Efficiency Maine Home Energy Loan, which may cover eligible net project costs after rebates, including required electrical work, subject to program requirements and credit approval.
Ask your vendor about manufacturer offers, and get it in writing whether they can be combined with the Efficiency Maine rebate. A sales-floor discount sometimes replaces another benefit instead of adding to it.
You can also explore Renovate’s HVAC financing options.
Renovate is not a lender and does not make credit decisions. Financing, if available, is provided by third-party lenders and is subject to their terms and approval. Renovate may also help you explore local contractor options in Maine. A Renovate connection does not establish Efficiency Maine registration, so verify any contractor in the official directory.
Under the standard program, eligible ducted whole-home systems receive $3,000, $6,000, or $9,000 per housing unit, depending on income. Other whole-home systems receive $1,000, $2,000, or $3,000 per eligible outdoor unit, subject to the same lifetime limits. Qualifying projects may also receive the temporary $500 bonus through December 31, 2026.
There’s no official statewide average, but expect roughly $3,500 to $7,500 for a one-zone system, $8,000 to $18,000 for a larger ductless project, and $12,000 to $35,000 or more for a ducted whole-home system, before rebates.
Often, but not always. Replacing substantial oil, propane, kerosene, or electric-resistance use can lower total heating costs, even though the electric bill rises. The result depends on insulation, system sizing, electricity and fuel prices, thermostat settings, and how much backup heat the home uses.
Yes. Efficiency Maine registration is separate from a contractor’s licensing, experience, or financing offer. Check the company’s current status in the registered-vendor directory before signing a contract or paying a deposit, even when the contractor says it routinely handles rebate paperwork.
Sometimes. Under the non-ducted standard rules, a boiler or furnace may remain as emergency backup only. For an eligible ducted whole-home project, an existing fossil-fuel forced-air furnace must be removed. Ask the vendor to document how the old system will be handled before you sign.
No, the multi-zone outdoor unit itself is not eligible under the current standard per-unit criteria. Its heating capacity can still count toward the home sizing requirement, so a qualifying proposal may include a multi-zone system without that outdoor unit earning a rebate.
You need to email or postmark your claim within six months of finishing the project. After that, Efficiency Maine says to allow about six weeks for processing once they receive a complete submission. It’s worth sending your paperwork in soon after installation, as it gives you time to address any missing details.
