On January 1, 2027 Mass Save® heat pump rebates. Whole-home heat pumps installed in 2026 can earn up to $8,500, but you’ll only get a maximum rebate of $7,500t for the same system installed in January 2027. If you’ve been thinking of installing a new heat pump, now’s the time to book your install before the rebate drops.

At Endless Energy, we’ve been installing cold-climate heat pumps in Massachusetts since 2013, and our remaining 2026 install dates are filling up now. Schedule a free heat pump consultation, and we’ll tell you if your project can be installed before December 31, so you can take advantage of this year’s savings.

Mass Save Heat Pump Rebates Are Dropping in 2027

Mass Save’s whole-home heat pump rebate drops from $2,650 to $2,350 per ton for any system installed on or after January 1, 2027, with the cap dropping from $8,500 to $7,500. Partial-home rebates drop from $1,125 to $1,000 per ton, with the same new $7,500 cap.

The day you install your equipment is the day that sets your rebate amount. If you sign a contract in December but the outdoor unit isn’t installed until January, you’ll end up with the lower 2027 rebate.

What This Means in Dollars: Example Savings by System Size

Installing a heat pump before the Mass Save heat pump rebate changes in 2027 can save you around $500 to $1,000 in upfront costs. Here’s how 2026 vs. 2027 Mass Save rebates compare for the standard sizes we quote across Metrowest and the South Shore:

  • 3-ton whole-home system: $7,950 if installed in 2026 or $7,050 in 2027, a $900 difference.
  • 4-ton whole-home system: $8,500 in 2026, or $7,500 in 2027, costing you $1,000.
  • 4-ton partial-home system: $4,500 in 2026 versus $4,000 in 2027, a $500 difference.

Booking your heat pump installation sooner rather than later also helps you save on fuel. If you currently heat with oil, having your heat pump installed before the coldest days of January means one less tank fill-up this season.

Key Deadlines: Install by Dec 31, Submit by Feb 28

You need to meet two Mass Save rebate deadlines to qualify for 2026 amounts:

  • December 31, 2026: Your heat pump equipment must be installed.
  • February 28, 2027: Submission deadline for rebate application and paperwork (must be with Mass Save, not in the mail).

Most heat pump installations take one to five days, but require a consultation, load calculation, any needed weatherization, and permits first. If you’re aiming to install this year, plan to work out the details in November. Holiday weeks and the first big snowstorm can fill up December calendars quickly.

Eligible Endless Energy customers also skip Mass Save’s eight-week processing wait. We take the Mass Save rebate off the price upfront as an instant rebate and file the paperwork ourselves. You’ll still need to meet every rebate requirement, but we’re the ones waiting on the check.

New Rule: Serial Number Photos on Every Application

Since October 1, 2026, every Mass Save heat pump application needs a clear photo of each outdoor unit’s nameplate showing its serial number. If your home has more than one outdoor unit, your application needs a photo of each one.

A missing or blurry photo can stall your application and delay your rebate. If fixing the photo pushes your paperwork past the February 28 deadline, you may receive the 2027 rebate instead. If you book with Endless Energy, you won’t have to worry. Our team files the application for you and handles the nameplate photos during installation.

Whole-Home vs. Partial-Home: Which Rebate Do You Qualify For?

Whole-home rebates are for homes where heat pumps become the main heating system. Partial-home rebates are for homes that keep their existing system as backup for some of the heating load.

Both whole-home and partial rebates require you to replace oil, propane, natural gas, or electric resistance heat and apply on a residential account with a Mass Save sponsor utility such as Eversource or National Grid. The equipment must also be on the ENERGY STAR Cold Climate list and installed by a member of the Mass Save Heat Pump Installer Network, such as Endless Energy.

You’ll qualify for a whole-home rebate if:

  • Both your heating and cooling are replaced by heat pumps, with no other system serving the home.
  • Your home will be occupied full-time through the winter.
  • You can sign a Whole-Home Heat Pump Verification Form.
  • Weatherization before installation, which you can show if it was built in 2000 or later, if a Home Energy Assessment recommended less than $1,000 in weatherization, or if you’ve completed weatherization recommended since 2013.

You’ll qualify for a partial-home rebate if:

  • You can keep a boiler or furnace as backup for part of your home’s heating.
  • Any zone still running on oil, propane, or gas needs an approved integrated control.
  • A heat pump fully takes over a zone, and the old heating source is removed or disconnected.
  • Your home is occupied full-time through the winter.
  • The heat pumps aren’t going into a new addition or space that was never heated or cooled.

Partial home projects can also earn two $500 bonuses in 2026:

  • Sizing bonus: The system must be sized to 90 to 120% of your home’s heating load, based on a Manual J Load calculation.
  • Weatherization bonus: You complete a Home Energy Assessment plus the recommended weatherization within one year before or six months after the install.

Other Ways to Save: HEAT Loan, Income-Based Rebates, Seasonal Rates

There are a few other ways you can save on your heat pump project. The Mass Save HEAT Loan offers 0% financing up to $25,000, covering all of your upgrades combined. It can pay for heat pumps, heat pump water heaters, and weatherization. The loan needs lender approval, and whole-home heat pump projects require a Home Energy Assessment.

Income-based enhanced rebates can reach $16,000, with some qualifying households able to get a heat pump at no cost through Mass Save’s Turnkey Services. These 2026 offers are for income-qualified homes replacing oil, propane, or electric resistance heat.

Seasonal Massachusetts heat pump rebates from Eversource, National Grid, and Unitil lower the electric rate from November through April for eligible customers. You enroll through your utility provider, with eligible programs appearing in your account.

Can You Still Make the Deadline? What to Do This Week

Most heat pump installations can still make the December 31, 2026 deadline if you get started in November. To keep your project on track, do these things this week:

  • Book the free consultation: Schedule a visit where we’ll check your home, run the load calculation, and see if we can book an installation date before the end of the year.
  • Find your old quote: If you have a proposal from us earlier this year, send it over so we can start from it instead of from scratch.
  • Check your weatherization status: If your home was built before 2000 and you’ve never had a Home Energy Assessment, schedule one now.
  • Start financing early: If you plan to use the HEAT Loan, apply as soon as you have a signed quote.

Beat the Deadline and Book Your Heat Pump Consultation Today

Want to get your heat pump installed before December 31? Schedule your free heat pump consultation now. We’ll look over your home and check whether your project can still be scheduled this year. We also have special offers and financing plans that help keep the cost of your new system more manageable.

Frequently Asked Questions

Is there still a federal tax credit for heat pumps?

The federal 25C credit ended on December 31, 2025. Mass SAVE rebates and the HEAT Loan are the main incentives still available to homeowners.

If I sign a contract in December but my heat pump is installed in January, which rebate do I get?

If your heat pump is installed anytime after December 31, 2026, you’ll receive the 2027 rebate. Mass Save goes by the install date rather than the signing or purchase date.

If I already have a heat pump, can I get the whole-home rebate to replace it?

Heat pump to heat pump replacements don’t qualify for whole-home or partial-home rebates. You may still qualify for the Basic rebate instead, which pays $250 per ton up to $2,500 for 2026 installs.

Do I have to wait eight weeks for a rebate check?

If you’re eligible and install with Endless Energy, you’ll get your rebate instantly. We apply the Mass Save rebate upfront as an instant rebate and wait for the payment ourselves.

Do I need a Home Energy Assessment first?

To qualify for the whole-home rebate, your home has to meet Mass Save’s weatherization rule, and an assessment is the easiest way to show that. You’ll also need one for a HEAT Loan on a whole-home project and for the partial-home weatherization bonus.