If you've been thinking about upgrading to heat pumps, Efficiency Maine's rebates are now the main incentive in play. The federal heat pump tax credit ended for equipment installed after December 31, 2025, so the state program carries the weight in 2026 — and for income-eligible households it can still cover a large share of a whole-home project.
Updated September 2026 with the figures in Efficiency Maine's heat pump rebate brochure dated June 24, 2026. Program terms can change; efficiencymaine.com has the current version.
At Southern Maine Heat Pumps, we help every customer take full advantage of every dollar available. Here's a detailed breakdown of the 2026 rebate landscape and how to maximize your savings.
The 2026 Efficiency Maine Rebate Program at a Glance
Efficiency Maine continues to be one of the most generous state programs in the country for heat pump incentives. The program is funded through a small charge on electric bills, and it exists specifically to help Maine residents transition to cleaner, more efficient heating and cooling systems. In 2026, the program covers air-source heat pumps, heat pump water heaters, and related equipment — with rebate amounts that vary based on the type of system and the number of indoor units installed.
The good news: rebate funding remains strong heading into 2026. However, rebate amounts can change as the program evolves, so acting sooner rather than later ensures you lock in the current incentive levels.
Rebate Amounts by System Type
Whole-home heat pumps: Efficiency Maine pays per rebate-eligible single-zone outdoor unit: $1,000 for any income, $2,000 for moderate-income households and $3,000 for low-income households, up to lifetime limits of $3,000, $6,000 and $9,000 per housing unit. The system has to be your primary heat — heat pumps sized for at least 80% of the home's peak heating load, with any oil or propane boiler kept only as emergency backup — and it must be installed by a Residential Registered Vendor. Homes that had a natural-gas utility account before the upgrade are not eligible for this rebate.
Ductless mini-splits: Ductless mini-split heat pumps are the most common way Maine homes meet those rules. Each single-zone outdoor unit on Efficiency Maine's eligible list counts toward the rebate.
Multi-zone systems: A multi-zone heat pump system can still be the right design for your house, but multi-zone outdoor units are not rebatable themselves; their capacity counts toward the whole-home sizing requirement. We lay out the trade-off in your proposal so you can compare a rebate-eligible single-zone layout with a multi-zone one.
Limited-time bonus: Efficiency Maine adds $500 per housing unit for eligible whole-home upgrades completed, and claimed, between March 1 and December 31, 2026.
Heat pump water heaters: Heat pump water heaters qualify for their own separate rebate — typically $850 or more for qualifying models. Since water heating accounts for roughly 20% of most homes' energy bills, this is one of the highest-impact upgrades you can make, and the rebate makes it remarkably affordable.
Commercial systems: Business owners aren't left out. Commercial heat pump systems for offices, retail spaces, and multi-unit buildings qualify for Efficiency Maine commercial incentives, which can be even larger than residential rebates depending on the scope of the project. We work with business owners to design systems that maximize both comfort and rebate eligibility.
Income-Based Enhanced Rebates
Efficiency Maine offers enhanced rebates for income-eligible households. Low-income tier: a household member receives MaineCare, HEAP, SNAP or TANF, or household income is at or below 80% of the county median, verified by Efficiency Maine. Moderate-income tier: federal adjusted gross income up to $70,000 for single filers or $100,000 for joint filers, also verified. Both tiers require the home to be the owner's principal residence. Efficiency Maine's own example puts a two-unit, $10,000 installation at $4,000 after rebates for a low-income household, $6,000 for moderate income and $8,000 for any income.
During your consultation, we'll help you determine whether you qualify for enhanced rebates and walk you through any additional documentation needed.
What Happened to the Federal Tax Credit
The federal Energy Efficient Home Improvement Credit (Section 25C), which paid up to $2,000 toward a qualifying heat pump, was ended by the One Big Beautiful Bill Act for equipment placed in service after December 31, 2025. A system installed in 2025 can still be claimed on your 2025 return, but a 2026 installation gets no federal credit. That makes the Efficiency Maine rebate, and the Efficiency Maine Home Energy Loan on our financing page, the incentives that matter this year.
How We Handle the Paperwork
Navigating rebate applications and eligibility requirements can feel overwhelming. That's why we manage the process as part of every heat pump installation. As a Residential Registered Vendor we select equipment from Efficiency Maine's eligible list, size the system to the whole-home rules, and complete the claim form with you — it has to be emailed or postmarked within six months of the project's completion.
Timing Matters: Why 2026 Is the Year to Act
Rebate programs are subject to annual funding levels and policy changes, and Efficiency Maine states that its incentives can change or end. The $500 whole-home bonus in particular only applies to projects completed and claimed by December 31, 2026.
If you're new to heat pumps, our complete guide to heat pumps in Maine covers everything from how they work to the different system types available. Already know you want heat pumps but not sure how to get your home ready? Our guide to preparing for installation walks you through every step. And if you have an existing system that's showing its age, check out the 7 signs your heat pump needs professional attention to determine whether a repair or a rebate-eligible replacement makes more financial sense.
Get Your Free Rebate Consultation
Every home is different, and rebate eligibility depends on your specific situation — the type of system, the number of units, your home's existing setup, and your household income. The best way to find out exactly what you qualify for is to schedule a free consultation with our team.
Contact Southern Maine Heat Pumps today and we'll provide a detailed rebate estimate alongside your system proposal — no obligation, no pressure. Or call us directly at (207) 317-1077. We're here to help you get the most out of every rebate dollar available.