Does Berkshire Gas offer a heat pump rebate?

Not directly — and this trips up a lot of western-MA homeowners. Berkshire Gas is a gas-only Mass Save sponsor, and heat pumps run on electricity, so your heat pump rebate files through your ELECTRIC sponsor instead. In most Berkshire Gas towns that's Eversource Electric; in a few (like Westfield) it's a Municipal Light Plant. The rebate amount is the same statewide Mass Save figure — up to $8,500 whole-home — it just doesn't come from Berkshire Gas.

Who actually files my heat pump rebate in Berkshire Gas territory?

Your electric utility. In Amherst and Pittsfield, electricity is Eversource, so the heat pump rebate is an Eversource Mass Save filing. In Westfield, electricity is Westfield Gas + Electric (a Municipal Light Plant), so Mass Save does not apply and you use the MLP's own heat pump program plus the statewide MLP Zero-Interest Loan. Check your electric bill — the logo on it tells you who files your rebate.

What IS Berkshire Gas responsible for as a Mass Save sponsor?

The gas side of Mass Save: rebates for high-efficiency gas heating equipment and gas water heaters, and Home Energy Assessments plus weatherization (air sealing and insulation) for gas-heated homes. If you're keeping gas heat and just want a weatherization or gas-equipment rebate, that's a Berkshire Gas filing. If you're switching to a heat pump, that's your electric sponsor.

How much is the heat pump rebate for a Berkshire Gas customer?

The statewide Mass Save standard: up to $8,500 whole-home at $2650/ton, or up to $8,500 partial-home at $1125/ton with $500 sizing and weatherization bonuses, plus the 0% HEAT Loan up to $25,000. It's filed through your electric sponsor, and the equipment must be on the Mass Save HPQPL with an HPIN-enrolled installer.

Which towns are in Berkshire Gas territory?

Berkshire Gas serves natural gas across Berkshire County and parts of Franklin and Hampshire counties in western Massachusetts — including Pittsfield, North Adams, Great Barrington, Lee, Lenox, Amherst, and Greenfield among others. Electric service in most of these towns is Eversource; a handful are Municipal Light Plant communities. Use the Mass Save Sponsors directory to confirm your electric sponsor.

Can I still claim a federal tax credit for a heat pump in western MA?

No. The federal §25C ($2,000 heat pump) and §25D (30% geothermal) credits both expired December 31, 2025 under the One Big Beautiful Bill Act. The IRA-funded HEAR rebate (up to $8,000 for households at or below 80% AMI) survives and runs through the Mass Save income-eligible pathway.

Berkshire Gas & Heat Pump Rebates in Western Massachusetts

By MassHVAC Editorial Team Reviewed by MassHVAC Editorial Team Last updated 2026-09-19

The trap: Berkshire Gas can't file your heat pump rebate

If you search "Berkshire Gas heat pump rebate," the honest answer is that Berkshire Gas is a gas-only Mass Save sponsor — and a heat pump runs on electricity. The Mass Save program routes every rebate to the sponsor that administers the fuel of the equipment being installed. Since a heat pump is an electric appliance, your heat pump rebate files through your electric sponsor, not Berkshire Gas.

In practice, for most Berkshire Gas towns your electric sponsor is Eversource Electric, so the up-to-$8,500 rebate is an Eversource filing. In a few towns (notably Westfield) electricity comes from a Municipal Light Plant, which is outside Mass Save entirely — those homeowners use the MLP's own program and the MLP Zero-Interest Loan instead. Confirm your electric sponsor with the Mass Save Sponsors directory.

What Berkshire Gas does cover

Berkshire Gas's Mass Save role is real, it's just on the gas side:

Gas-equipment rebates — high-efficiency gas boilers, furnaces, and water heaters for homeowners staying on gas.
Weatherization — Home Energy Assessments plus air sealing and insulation for gas-heated homes.
Gas-side HEAT Loan coordination for weatherization projects.

If you're switching from gas to a heat pump, Berkshire Gas may still be relevant for the weatherization half of your project (which improves heat pump performance and unlocks the $500 weatherization bonus), even though the heat pump rebate itself files through your electric sponsor.

Massachusetts incentives

2026 Mass Save Heat Pump Rebates (filed through your electric sponsor)

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.

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Primary source

“Heat pump rebates file through the electric sponsor. Statewide Mass Save whole-home tier: $2650/ton up to $8,500 per home. Berkshire Gas covers gas equipment and weatherization only.”

— Mass Save program documentation Accessed 2026-09-19

How to tell who files your rebate

Look at your electric bill (not your gas bill). The utility named there is your Mass Save electric sponsor.
If it says Eversource — your heat pump rebate is an Eversource filing (up to $8,500).
If it says a local light department (e.g. Westfield Gas + Electric) — you're in a Municipal Light Plant community, outside Mass Save; use the MLP program and MLP financing.
Either way, the gas name on your other bill (Berkshire Gas) governs only your gas-equipment and weatherization rebates.

Why a heat pump still makes sense in western MA

Western Massachusetts has cold design temperatures (Pittsfield and the Berkshires run colder than Boston), so a properly specified cold-climate heat pump is essential — size it to a written Manual J against the local design temperature. For homes on delivered fuels (oil, propane) common in the hilltowns, the conversion math is compelling. The full rebate stack is on the rebates hub.

Berkshire Gas heat pump FAQ

Does Berkshire Gas offer a heat pump rebate?: Not directly — and this trips up a lot of western-MA homeowners. Berkshire Gas is a gas-only Mass Save sponsor, and heat pumps run on electricity, so your heat pump rebate files through your ELECTRIC sponsor instead. In most Berkshire Gas towns that's Eversource Electric; in a few (like Westfield) it's a Municipal Light Plant. The rebate amount is the same statewide Mass Save figure — up to $8,500 whole-home — it just doesn't come from Berkshire Gas.
Who actually files my heat pump rebate in Berkshire Gas territory?: Your electric utility. In Amherst and Pittsfield, electricity is Eversource, so the heat pump rebate is an Eversource Mass Save filing. In Westfield, electricity is Westfield Gas + Electric (a Municipal Light Plant), so Mass Save does not apply and you use the MLP's own heat pump program plus the statewide MLP Zero-Interest Loan. Check your electric bill — the logo on it tells you who files your rebate.
What IS Berkshire Gas responsible for as a Mass Save sponsor?: The gas side of Mass Save: rebates for high-efficiency gas heating equipment and gas water heaters, and Home Energy Assessments plus weatherization (air sealing and insulation) for gas-heated homes. If you're keeping gas heat and just want a weatherization or gas-equipment rebate, that's a Berkshire Gas filing. If you're switching to a heat pump, that's your electric sponsor.
How much is the heat pump rebate for a Berkshire Gas customer?: The statewide Mass Save standard: up to $8,500 whole-home at $2650/ton, or up to $8,500 partial-home at $1125/ton with $500 sizing and weatherization bonuses, plus the 0% HEAT Loan up to $25,000. It's filed through your electric sponsor, and the equipment must be on the Mass Save HPQPL with an HPIN-enrolled installer.
Which towns are in Berkshire Gas territory?: Berkshire Gas serves natural gas across Berkshire County and parts of Franklin and Hampshire counties in western Massachusetts — including Pittsfield, North Adams, Great Barrington, Lee, Lenox, Amherst, and Greenfield among others. Electric service in most of these towns is Eversource; a handful are Municipal Light Plant communities. Use the Mass Save Sponsors directory to confirm your electric sponsor.
Can I still claim a federal tax credit for a heat pump in western MA?: No. The federal §25C ($2,000 heat pump) and §25D (30% geothermal) credits both expired December 31, 2025 under the One Big Beautiful Bill Act. The IRA-funded HEAR rebate (up to $8,000 for households at or below 80% AMI) survives and runs through the Mass Save income-eligible pathway.

Related guides

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