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Landlord & Rental-Property Heat Pump Rebates in Massachusetts

By MassHVAC Editorial Team Reviewed by MassHVAC Editorial Team Last updated

Each rental unit is its own $8,500 rebate

The most important fact for a Massachusetts landlord: Mass Save treats each dwelling unit as its own whole-home project. Convert a unit's heating to a heat pump as its sole source and that unit can claim up to $8,500 — regardless of how many units the building has. A two-family can capture up to $17,000, a three-decker up to $25,500. The rebate is paid to whoever buys the qualifying equipment (typically you, the owner) and follows the electric account of record for each unit.

Massachusetts incentives

Mass Save rebates that apply per rental unit

See the full Mass Save rebates hub

Verified 2026-09-19

Most homes

Whole-Home Heat Pump Rebate

$2,650 /ton

Capped at $8,500 per home

The installed heat pump must be the sole source of heating and cooling for the spaces served. Equipment must be ENERGY STAR Cold Climate certified and listed on the Mass Save Heat Pump Qualified Products List (HPQPL). A Manual J load calculation is needed to qualify for the sizing bonus and is industry-standard practice on Mass Save projects.

Partial-Home / Supplemental Heat Pump Rebate

$1,125 /ton

Capped at $8,500 per home

Heat pump installed alongside an existing primary heating system. Equipment must be on the HPQPL. Lower per-ton rebate reflects supplemental rather than sole-source use.

Basic Heat Pump Rebate

$250 /ton

Capped at $2,500 per home

New for 2026. Applies to replacing an existing heat pump with a new qualified HPQPL-listed heat pump, or conditioning a previously unconditioned space.

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$500 Right-Sized Equipment Bonus Partial-home

Partial-home installs only. Equipment must be sized to meet 90–120% of the total heating load at the outdoor design temperature, documented via an ACCA Manual J load calculation submitted with the rebate application.

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$500 Weatherization Bonus Partial-home

Partial-home installs only. Requires a Mass Save Home Energy Assessment plus installation of the recommended weatherization (typically air sealing and insulation) within one year prior to or up to six months after the heat pump installation.

Financing

Mass Save HEAT Loan

0% APR up to $25,000

  • Below 135% of State Median Income: 7 years (84 months)
  • 135%–300% of State Median Income: 5 years (60 months)
  • Over 300% of State Median Income: 3 years (36 months)

Subject to bank underwriting through participating Massachusetts lenders. Covers equipment + installation costs for qualifying high-efficiency upgrades (heat pumps, ductless mini-splits, insulation, water heaters, and batteries enrolled in ConnectedSolutions). A Home Energy Assessment is mandatory before financing a whole-home heat pump. Households below approximately 81% SMI typically route to Mass Save's no-cost / enhanced-rebate programs rather than the HEAT Loan.

No federal heat pump tax credit applies in 2026.

  • Section 25C Energy Efficient Home Improvement Credit (heat pump portion) (30% of cost up to $2,000 annually for qualifying heat pump installations (inflation reduction act expansion)) ended for property placed in service after 2025-12-31 under the One Big Beautiful Bill Act (P.L. 119-21).
  • Section 25D Residential Clean Energy Credit (geothermal portion) (30% of installed cost for ground-source (geothermal) heat pumps, with no dollar cap) ended for property placed in service after 2025-12-31 under the One Big Beautiful Bill Act (P.L. 119-21).

Status as of 2026-09-19: neither 25C nor 25D has been reinstated or replaced by Congress. Pending bills (e.g. H.R. 616) have not advanced. Pre-2026 §25D installs may carry forward unused credits.

Rebate amounts and eligibility verified 2026-09-19 against primary program documentation. We re-check before any publish.

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The split-incentive problem — and how MA bridges it

Rental efficiency upgrades run into a structural mismatch: you pay for the heat pump, but the tenant who pays the heating bill captures the operating savings. Massachusetts leans on three tools to make the owner's math work anyway:

  • Large rebates — up to $8,500 per unit cuts the capital cost sharply.
  • 0% HEAT Loan financing — spread the owner's balance over up to 7 years at no interest (see the HEAT Loan guide).
  • Income-qualified enhancements — where the tenant qualifies, enhanced caps or no-cost installs can bring owner cost near zero.

Owners also gain non-bill benefits: adding central cooling raises rentability and rent ceilings, modern equipment lowers turnover and maintenance friction, and electrification future-proofs the building against tightening MA gas policy.

Enhanced rebates based on your tenant's income

A lever many landlords miss: Mass Save's income-eligible and moderate-income enhanced offers are tied to the occupant's income, not the property owner's. If a unit's tenant household falls within the qualifying bands, that unit can reach the Enhanced ASHP cap (up to $16,000) — and at the lowest income tier, Mass Save's no-cost turnkey pathway can cover the install end-to-end. Full mechanics are on the income-qualified pathway page. Screen your units against these bands before assuming you'll pay the standard net cost.

Who claims it, and how to file cleanly

  1. Confirm the electric account of record for each unit — it determines the Mass Save sponsor that processes the filing.
  2. Contract a Mass Save HPIN-enrolled installer who will file the rebate for each unit.
  3. Get a written Manual J per unit; each unit's system must be HPQPL-listed (R-32 or R-454B).
  4. Screen tenant income where possible to unlock enhanced offers.
  5. Confirm in writing that the rebate is paid to you as the equipment purchaser before work is filed.

Two-to-four unit buildings and triple-deckers

Most MA rental heat pump work happens on small multifamily — two-families, three-deckers, and four-units. The per-unit vs whole-building design decisions (metering, condenser placement, sequencing) are covered in depth in the statewide multifamily & condo guide. For the broader rebate rules, start at the rebates hub and eligibility guide.

Landlord heat pump rebate FAQ

Can a landlord claim the Mass Save heat pump rebate on a rental property?
Yes. Mass Save residential rebates are available for rental dwelling units, and each unit is treated as its own whole-home project — so a converted unit can qualify for up to $8,500. The rebate is paid to whoever purchases the qualifying equipment, which on a rental is typically the owner. The install must meet the same rules as any Mass Save project: HPQPL equipment, HPIN-enrolled installer, and a Manual J.
Who claims the rebate — the owner or the tenant?
It follows the electric account of record for the unit and is paid to whoever buys the equipment. On a typical rental where the landlord contracts and pays for the install, the landlord claims the rebate. Where a tenant pays their own electric bill, that account still governs which sponsor processes the filing, but the rebate check goes to the equipment payer. Clarify this with your installer and sponsor before the work is filed.
What is the "split-incentive problem" for rentals?
It's the core economic friction of rental efficiency upgrades: the owner pays the capital cost of the heat pump, but the tenant — who pays the heating bill — captures the operating savings. Massachusetts programs try to bridge this with strong rebates, 0% HEAT Loan financing, and income-qualified enhancements, so the owner's net cost is low enough that the property-value and reduced-turnover benefits justify the investment even though the tenant sees the bill savings.
Can income-qualified enhanced rebates apply based on my tenant's income?
Yes — this is a key lever for landlords. Mass Save's income-eligible and moderate-income enhanced offers are tied to the occupant's income, not the property owner's. If your tenant's household income falls within the qualifying bands, the unit can access enhanced caps (up to $16,000 whole-home ASHP) or, at the lowest income tier, no-cost turnkey installation. That can dramatically cut — or eliminate — the owner's out-of-pocket cost on qualifying units.
How do rebates work on a two- or three-family building?
Each dwelling unit is its own whole-home project, so a two- or three-family can capture up to $8,500 per unit — potentially $17,000 across a two-family or $25,500 across a three-decker. Owner-occupants commonly convert their own unit first (capturing both rebate and savings) and phase rental units as leases turn over or old systems fail. See the statewide multifamily guide for the per-unit vs whole-building mechanics.
Do the expired federal tax credits affect landlords?
The federal §25C and §25D residential credits (expired December 31, 2025) were for owner-occupants and never the main lever for rentals anyway. What matters for landlords is the state Mass Save rebate stack plus the IRA-funded HEAR rebate for income-qualified households — both still active. Consult a tax professional about how any rental-property depreciation or business-expense treatment applies to your situation.

Related guides

Heat-pumping a Massachusetts rental portfolio?

Comfitrust will design per-unit systems, screen units for enhanced eligibility, and file each unit's Mass Save rebate.

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