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MassHVAC

Mass Save Contractors in Massachusetts

By MassHVAC Editorial Team Reviewed by MassHVAC Editorial Team Last updated

What makes a contractor "Mass Save qualified"

In Massachusetts, "Mass Save contractor" is not a marketing phrase — it is a specific, verifiable status. Two credentials matter, and both are non-negotiable for a rebate-eligible heat pump install:

  • Massachusetts Refrigeration Technician (RT) license. Issued by the state Board of Examiners (Division of Occupational Licensure), this is the license legally required to install HVAC refrigerant systems anywhere in the Commonwealth. Gas work requires a separate gas fitter license.
  • Mass Save Heat Pump Installer Network (HPIN) enrollment. HPIN is the roster of contractors that Mass Save has trained and audited to deliver rebate-qualifying installs. Only an HPIN-enrolled contractor can file your Mass Save heat pump rebate. The equipment being on the qualified list is not enough — the installer has to be in the network too.

A qualified Mass Save contractor also runs an ACCA Manual J load calculation before quoting. Mass Save's whole-home rebate requires the system to be sized to 90–120% of the design heating load, so a contractor who sizes by square-foot rule of thumb is putting your rebate at risk. See the Mass Save HPIN explainer for how the network works, and the HVAC installation companies guide for how to vet one end-to-end.

Verify before you sign: the 6-point checklist

Installer claims do not count — verify each of these against a primary source before you sign a contract:

Why a non-HPIN install forfeits up to $8,500

This is the single most expensive mistake a Massachusetts homeowner can make on a heat pump project. The Mass Save whole-home rebate — $2,650 per ton, capped at $8,500 per home in 2026 — can only be filed by an HPIN-enrolled contractor. Hire a licensed but non-HPIN installer and you forfeit the entire rebate, even if the exact same equipment would have qualified. The equipment list and the installer network are two separate gates, and you have to clear both.

Income-qualified households can access even more through HPIN contractors: an enhanced whole-home air-source rebate of up to $16,000, and up to $8,000 in IRA-funded HEAR support, routed through the Mass Save income-eligible pathway. None of it is claimable through a contractor outside the network.

Massachusetts incentives

The rebates a Mass Save contractor files for you (2026)

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.

+

$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.

+

$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.

Get a quote using these rates

Mass Save contractors by Massachusetts city

We connect homeowners with HPIN-enrolled installers statewide. Each city page below covers the local permit office, the Mass Save sponsor utility that processes your rebate, and what to verify before you sign in that market:

Find a Mass Save contractor in your city

Before you hire: rebate and vetting guides

Frequently Asked Questions

What is a Mass Save contractor?
A Mass Save contractor is an HVAC installer enrolled in the Mass Save Heat Pump Installer Network (HPIN) who is also licensed as a Massachusetts Refrigeration Technician. HPIN enrollment is what lets the contractor file your heat pump rebate — the equipment being on the qualified list is not enough on its own.
How do I verify a contractor is Mass Save qualified?
Confirm HPIN enrollment on Mass Save's contractor finder (masssave.com/find-a-contractor), cross-reference the Refrigeration Technician license at the Massachusetts Bureau of Pipefitters, Refrigeration Technicians, and Sprinkler Fitters, and require a written Manual J load calculation with the quote. Do not rely on the contractor's own website claims.
Can any licensed HVAC contractor file my Mass Save rebate?
No. Only a contractor enrolled in the Mass Save Heat Pump Installer Network (HPIN) can file a rebate-eligible heat pump install. A licensed but non-HPIN installer forfeits the whole-home rebate of up to $8,500 even if the equipment itself qualifies.
How much is the Mass Save heat pump rebate a contractor can file in 2026?
The 2026 Mass Save whole-home heat pump rebate is $2,650 per ton, capped at $8,500 per home. Income-qualified households can access an enhanced whole-home rebate of up to $16,000. The federal 25C and 25D tax credits expired December 31, 2025, so Mass Save is the primary incentive.
Does hiring a Mass Save contractor cost more?
Not inherently — install pricing on the same equipment varies more by contractor than by network status, and the rebate an HPIN contractor files (up to $8,500) typically outweighs any price difference. Always get three written quotes for a heat pump install over $10,000.

See your real cost after Mass Save rebates.

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