Last updated: June 2026
Maine homeowners can claim up to $18,650 in Efficiency Maine rebates on heat pumps, insulation, and air sealing. As a Top-Rated Efficiency Maine Vendor for 10+ years, we handle all paperwork and deduct your rebate directly from your invoice — no waiting for a reimbursement check.
Efficiency Maine is the state's independent administrator for energy efficiency programs. They offer rebates to Maine homeowners who invest in qualifying energy improvements, including heat pumps, insulation, and air sealing.
The program is funded by a small surcharge on electricity bills, which means every Maine ratepayer has already been contributing. These rebates are your money coming back to you.
Horizon Homes is a registered Efficiency Maine vendor. That means we can process your rebate directly, deducting it from your invoice before you pay. You never have to file paperwork, wait for a reimbursement check, or deal with the program yourself. We handle everything.
Rebate amounts are based on your household income relative to the Area Median Income (AMI). Lower-income households qualify for significantly larger rebates, up to $9,000 for heat pumps and $8,000 for weatherization.
Efficiency Maine rebates for heat pumps depend on your household income and the number of outdoor units installed. Income-qualified households receive the largest rebates.
| Household Income | Per Outdoor Unit | Max (3 units) |
|---|---|---|
| Low Income | $3,000 | $9,000 |
| Moderate Income | $2,000 | $6,000 |
| Any Income | $1,000 | $3,000 |
These Efficiency Maine heat pump rebates apply to cold-climate, high-efficiency models rated to perform at -13F or below, like the Mitsubishi Hyper-Heating systems we install. Standard heat pumps that lose capacity in cold weather do not qualify. If you are still deciding which system is right for your home, our energy efficient heating guide covers the full comparison.
Rebate amounts are per outdoor unit, up to three units per home. For a low-income household installing three outdoor units, that is up to $9,000 in Efficiency Maine heat pump rebates alone. Moderate-income households receive up to $6,000, and all Maine homeowners qualify for at least $3,000 regardless of income, with no income verification required for the base tier.
These rebates can be combined with Maine insulation rebates and air sealing rebates for a combined maximum of $18,650. We handle all Efficiency Maine paperwork and deduct the rebate directly from your invoice. You pay the net amount.
Note: Rebates apply to single-zone outdoor units only. Multi-zone branch box systems (one large outdoor unit feeding multiple indoor heads) are not eligible for the per-unit rebate. The Mitsubishi Hyper-Heating cold-climate systems we install are on Efficiency Maine's Qualified Product List and qualify for all rebate tiers.
Rebate amounts are subject to change. Program details set by Efficiency Maine. Contact us for current rates and to verify your eligibility.
Efficiency Maine also offers substantial Maine insulation rebates and air sealing incentives, two of the most cost-effective ways to improve your home's comfort and efficiency. See our detailed breakdown of Maine insulation rebates and how to qualify.
Efficiency Maine's Home Energy Savings Program provides weatherization rebates covering blown-in cellulose insulation, air sealing, and building envelope improvements. As a registered vendor, Horizon Homes applies these Efficiency Maine insulation rebates directly to your invoice - you pay the net amount, no paperwork, no waiting on reimbursement.
| Household Income | % of Project Cost | Maximum Rebate |
|---|---|---|
| Low Income | 80% | $8,000 |
| Moderate Income | 60% | $6,000 |
| Any Income | 40% | $4,000 |
Rebate amounts are subject to change. These rebates can be combined with heat pump rebates for additional savings on whole-home projects.
Heat pump rebates and insulation rebates are separate programs. You can claim both on the same project. A whole-home project unlocks the $500 bonus.
| Program | Low Income | Moderate Income | Any Income |
|---|---|---|---|
| Heat pumps (up to 3 units) | $9,000 | $6,000 | $3,000 |
| $500 whole-home bonus (through Dec 2026) | $500 | $500 | $500 |
| Insulation & air sealing | $8,000 | $6,000 | $4,000 |
| Heat pump water heater | $1,150 | $1,150 | $1,150 |
| Combined Maximum | $18,650 | $13,650 | $8,650 |
Rebate amounts subject to change. Income thresholds set by Efficiency Maine. Federal 25C energy tax credits expired December 31, 2025 and are not included above.
Moderate-income household in Greater Portland: attic insulation plus two cold-climate heat pump units.
| Item | Cost | Rebate | You Pay |
|---|---|---|---|
| Attic insulation + air sealing | $7,500 | $4,500 (60% of cost) | $3,000 |
| 2 cold-climate heat pump units | $12,000 | $4,500 ($2,000 x 2 + $500 bonus) | $7,500 |
| Total | $19,500 | $9,000 | $10,500 |
The rebates are deducted directly from your invoice — you never pay the full $19,500. The $9,000 in rebates is paid to us by Efficiency Maine after the project is complete. Low-income households would save even more: up to $14,000 on the same scope of work. Every home is different; your free assessment will show your specific numbers.
As a registered Efficiency Maine vendor, we manage the entire rebate process on your behalf.
We assess your home and calculate your exact rebate eligibility, before you commit to anything.
Your Efficiency Maine rebate is deducted directly from your invoice. You pay the net amount. No waiting for a check.
We submit all required documentation to Efficiency Maine on your behalf. You don't have to do a thing.
The short answer: almost every Maine homeowner. All Maine residents who own their home and pay an electricity bill are eligible for some level of rebate. The amount you receive depends on your household income relative to the Area Median Income (AMI).
You don't need to verify your income before contacting us. During your free home energy assessment, we'll help you determine which income tier you fall into and calculate your exact rebate amount. If you qualify for income-based rebates, we'll walk you through the simple documentation process.
Not sure where you stand? Schedule a free assessment and we'll figure it out together.
