How to Verify a Mass Save Heat Pump Quote in Massachusetts

Written 2026-08-14 against the current Mass Save program-year rules.

Before you sign a Massachusetts heat pump proposal, run three checks against primary sources: the exact indoor + outdoor pair must appear on the current Mass Save Heat Pump Qualified Products List (HPQPL) as a matched system, the AHRI reference number on the quote must return that same matched pair on the AHRI Directory, and the installer's company must be listed in the Mass Save Heat Pump Installer Network. Miss any one of those and your Whole-Home rebate ($2,650 per ton, capped at $8,500) can be denied months after the contractor has already cashed your check.

The rest of this guide is how to actually do that verification without needing to be an HVAC pro. It matters more in 2026 than it did in 2024, because as of January 1, 2026 every system with a Global Warming Potential above 700 (which includes all R-410A gear) has been removed from the HPQPL. A proposal your neighbor's contractor emailed in 2024 can fail the rebate today.

Why a "Mass Save qualified" quote can still lose you the rebate

Mass Save is not a handshake program. The rebate is paid on a specific installed matched system, verified against three separate lists Mass Save maintains, and the tonnage on your rebate check is computed from a fourth (the AHRI Directory), not from what the contractor wrote in the proposal. The four failure modes we see most in MA:

• The outdoor unit is on the HPQPL, but the indoor coil the contractor spec'd is a different model that has never been AHRI-tested with that outdoor unit as a matched pair. The system as installed is not on the HPQPL.
• The proposal names the outdoor unit's nominal size ("3-ton heat pump") but the actual AHRI cooling capacity of the matched pair is 32,400 BTU, which is 2.7 tons. The rebate pays 2.7 x $2,650 = $7,155, not the 3 x $2,650 = $7,950 you had penciled in.
• The equipment is a real cold-climate model from a real brand, but it uses R-410A. As of January 1, 2026 that model is no longer on the HPQPL. Zero rebate.
• The system passes both the HPQPL and AHRI checks, but the installing company is not enrolled in the Mass Save Heat Pump Installer Network. Ineligible.

None of those failure modes are visible on the quote itself. All of them are visible in Mass Save's own lists in ten minutes.

The three checks to run before you sign

Print the proposal. Sit down with a laptop. You need three tabs: the current Mass Save HPQPL page, the AHRI Directory search, and the Mass Save Heat Pump Installer Network search. All three are on masssave.com or ahridirectory.org.

1. Is the exact indoor + outdoor pair on the current HPQPL?

Find the outdoor unit model number and the indoor unit (or coil) model number on the proposal. Both must appear, together, as a matched combination on the Mass Save HPQPL. Not just the outdoor unit. Not "the indoor coil is compatible per the manufacturer's application manual." The QPL is a list of pairs, and Mass Save pays on pairs.

Sanity-check the paired entry against your install type: ducted central, ducted mini-split, ductless (multi-zone or single-zone), or high-velocity. A matched pair listed on the QPL under "ducted central" does not automatically qualify a ductless application of the same outdoor unit.

While you're on the QPL, confirm two other things:

• The system is flagged as ENERGY STAR Cold Climate. That is a specific designation, tighter than plain ENERGY STAR, requiring the unit to hold at least 70% of its 47F heating capacity down at 5F outdoor and to deliver at least a 1.75 heating COP at 5F, per the ENERGY STAR Version 6.2 specification. A contractor calling their unit a "cold-climate heat pump" in an email is not the same thing.
• The refrigerant is R-454B, R-32, or another A2L with GWP under 700. Anything R-410A on a new-install quote in Massachusetts today is a red flag. Two narrow exceptions in the HPQPL rules: variable refrigerant flow systems 65,000 BTU/h or larger get through Jan 1, 2027, and self-contained factory-charged products with GWP above 700 get through Jan 1, 2028. Neither of those exceptions covers the residential ducted or ductless split systems most homes install.

2. Does the AHRI reference number on the quote match the pair on the Directory?

The contractor should list an AHRI reference number on the proposal. If they haven't, ask for it in writing before you sign anything. That number is a certification (issued by the Air-Conditioning, Heating, and Refrigeration Institute) that the specific indoor + outdoor combination has been tested together and rated for the capacity and efficiency the proposal is claiming.

Look up that reference number on the AHRI Directory of Certified Product Performance (ahridirectory.org, free public search). Two things need to come back true:

• The outdoor unit model and the indoor unit or coil model in the AHRI listing match, exactly (down to the trailing letters), the models on your proposal. Mismatched trailing letters can change the AHRI rating.
• The rated AHRI cooling capacity on the certificate is at least the tonnage the contractor is billing you against. Per Mass Save's own program page, "Tons are calculated based on AHRI cooling capacity divided by 12,000 BTUs." A 34,000 BTU AHRI cooling rating is 2.83 tons, not 3.

If either piece is off, the AHRI number does not certify what the contractor's proposal says it does. That is a rebate-application rejection, and the reviewer will catch it long after the install.

3. Is the installer in the Mass Save Heat Pump Installer Network?

Search the Mass Save Heat Pump Installer Network by ZIP code or company name. The installing company (not just the technician, not the salesperson) must appear in the network to earn the rebate. If they don't, no matter how good the equipment or how correct the AHRI paperwork is, the install does not qualify.

Two related traps. First, an installer can be listed for one utility service territory but not another. Confirm your electric utility (Eversource, National Grid, or Unitil for most MA towns, or your Municipal Light Plant if you live in one of the roughly 40 MLP towns that aren't in Mass Save) is one the installer is enrolled with. Second, HVAC subcontracting is common; ask, in writing, which company is the "installer of record" on the rebate application. That is the name that must be in the network.

Read the tonnage the way Mass Save reads it

The single number that most determines what your rebate check is worth is the tonnage, and the tonnage almost never equals the round number on the proposal.

What's on the quote	What Mass Save uses	Example
"3-ton cold-climate heat pump"	AHRI cooling capacity of the matched pair, divided by 12,000	AHRI-rated 32,400 BTU = 2.7 tons
"Two 2-ton mini-split heads"	Sum of AHRI-rated cooling of each installed indoor head, matched to the outdoor unit	Two heads rated 22,000 and 18,000 BTU = 3.33 tons total
"Right-sized for your home"	Doesn't matter, size is a heating-load question and the rebate is a cooling-capacity question	See our heat pump sizing guide for MA cold-climate winters
"Qualifies for the $8,500 rebate"	The $8,500 is a cap, not a promise; you get 2,650 x AHRI tons, or 1,125 x AHRI tons on partial-home, up to that cap	A 2-ton whole-home install pays 2 x $2,650 = $5,300, not $8,500

For a whole-home ($2,650/ton) install to actually hit the $8,500 cap, the AHRI-rated cooling capacity needs to be about 38,500 BTU or larger. A 3-ton nominal system usually gets there, a small mini-split usually does not. Contractors who talk about "the $8,500 rebate" without qualifying that math are being sloppy.

On the Whole-Home vs Partial-Home tier itself, we have a dedicated guide (the choice is really about whether you keep the fossil boiler as backup, which drops you from $2,650/ton to $1,125/ton). See heat pump backup heat and the Mass Save rebate trap.

2026 quote red flags

If any of the following appears on your proposal, get a written correction before you sign:

• Outdoor unit model with a "-410A" suffix or R-410A named as the refrigerant. Off the HPQPL for new residential installs as of January 1, 2026. Full context on why is in our guide to the R-410A to R-454B refrigerant change in MA.
• No AHRI reference number. The contractor is either not paying attention or hoping you won't. Either way it's a filing risk.
• AHRI reference number but no indoor coil model on the quote. The AHRI number certifies a pair. If the coil isn't named, you can't verify the pair.
• "Federal 25C tax credit up to $2,000" on a 2026 install. The 25C credit ended December 31, 2025 under Public Law 119-21, and the 25D residential clean energy credit for geothermal, solar, and battery ended the same day. Any proposal claiming either for a 2026 install is out of date. Mass Save rebates are separate and still on.
• "Backup gas furnace stays in place, still qualifies for the Whole-Home rebate." Whole-Home requires the heat pump to serve the home as the sole heating source. Keeping the furnace drops the install to the Partial-Home tier unless the whole-home eligibility conditions and an approved integrated control are met. Ask the installer to show you which.
• "You'll get the enhanced (income-eligible) rebate for sure." The enhanced tier (up to $16,000 on a whole-home ASHP, up to $25,000 on a whole-home ground-source heat pump) requires an income-verification step through Mass Save. It is not something the installer can guarantee. Run the online eligibility check first.
• The install date is after December 31, 2026 but the proposal cites 2026 rebate amounts. The 2027 program-year numbers are separate. Ask what happens if the install slips.

What to do if the quote fails one of these checks

You still have room to push back before you sign. Ask the contractor to substitute an HPQPL-listed matched pair, or a matched pair with a matching AHRI reference number, or to enroll in the network. If they can't or won't, get quotes from installers who can (the Mass Save Heat Pump Installer Network directory is one starting point; our own Massachusetts HVAC contractor directory is another).

Do not sign a proposal that "we'll figure out the paperwork after the install." The rebate application is filed after installation, but its contents are locked in by what you signed. A contractor who tells you the AHRI number, HPQPL match, or installer-network enrollment "doesn't matter" is a contractor whose past customers have quietly eaten $5,000 to $8,000 rebates.

The Massachusetts install window for 2026 rebate eligibility runs through December 31, 2026, with rebate forms and supporting documentation due by February 28, 2027. That gives you time to walk away from a bad quote.

FAQ

Do I have to look up the AHRI number myself, or will the contractor do it?

The good ones already have. If a contractor can produce the AHRI certificate for the exact matched pair on the proposal without you asking, that is a strong quality signal. Your verification is a five-minute check that the number they gave you returns the equipment they said it does; you are not doing their job for them.

My unit is on the HPQPL but not flagged ENERGY STAR Cold Climate. Am I still eligible?

For a Massachusetts residential Whole-Home or Partial-Home rebate in 2026, no. Mass Save's program page states equipment must meet ENERGY STAR Cold Climate. Non-cold-climate units may qualify for other cooling-only or air-conditioning rebates, but not the heat pump program.

What if my contractor swaps the model at installation because "the coil was out of stock"?

Whatever gets installed must be an HPQPL-listed matched pair with a valid AHRI reference number. A field substitution to a different indoor coil breaks the pair on paper unless the new coil is also AHRI-matched with the outdoor unit and appears on the HPQPL. Ask for an updated proposal and AHRI number before the equipment goes in the crate, not after.

Do Municipal Light Plant customers use the same HPQPL?

MLP towns (Belmont, Concord, Danvers, Hingham, Ipswich, Reading, Taunton, Wellesley, and about 30 others) run their own energy programs, not Mass Save. Their rebate rules, HPQPL, and installer requirements are set by the local light plant. See MLP towns and the Mass Save exception for how that works. The AHRI Directory check is still useful because the AHRI matched-system logic is a national standard, but the specific list of eligible equipment is local.

Does the federal 25C tax credit still apply for a 2026 install?

No. Both the 25C energy-efficient home improvement credit and the 25D residential clean energy credit expired December 31, 2025 under Public Law 119-21. Any proposal that adds a federal credit line to a 2026 install is out of date. The Mass Save rebates (this article) and the Mass Save HEAT Loan 0% financing are separate programs and both still active.

Get a quote you can actually verify

If you already have a Massachusetts heat pump proposal in hand and one of the checks above is failing, or if you want to line up two or three quotes you can compare against the HPQPL side by side, we can route your project to installers who file Mass Save applications correctly. Start at /get-estimate and tell us the model on the quote you are trying to verify; the match form will handle the rest.

For the broader picture of what's on the table this year, see our full guide to Mass Save heat pump rebates for 2026. For the trade hub with all our MA HVAC content in one place, start at /hvac.