How much does geothermal cost in Massachusetts?

Geothermal (ground-source heat pump) installation in Massachusetts typically costs $30,000–$60,000 depending on loop type and home size. Horizontal loops are cheapest but need open land; vertical-bore loops are standard in dense MA neighborhoods.

Is the 30% federal geothermal tax credit still available?

No. The federal Section 25D Residential Clean Energy Credit — the 30% geothermal credit — expired December 31, 2025 under the One Big Beautiful Bill Act. Property placed in service after that date does not qualify.

How long does a geothermal system last?

The indoor heat pump unit typically lasts 20–25 years; the ground loop itself can last 50+ years. That longevity helps offset the higher upfront cost, especially when paired with current Mass Save geothermal incentives.

Do I need a lot of land for geothermal?

Not necessarily. Horizontal loops need significant open land (roughly a third to half an acre), but vertical-bore loops only need enough yard for a drilling rig and a few small wellheads — workable on most Massachusetts suburban lots.

Geothermal Ground Loop Types for Massachusetts Homes

By MassHVAC Editorial Team Reviewed by MassHVAC Editorial Team Last updated 2026-05-27

A geothermal heat pump system serving a Massachusetts home.

Lot size and soil conditions usually dictate the choice.

What this means for a Massachusetts homeowner

Geothermal Ground Loop Types for Massachusetts Homes is a subset of the broader geothermal decision. The core trade-offs — cost-after-rebate, sizing accuracy, installer credentials, equipment list eligibility — are the same as on the Geothermal pillar; this page focuses on what is specific to geothermal ground loop types.

How this affects your Mass Save eligibility

Mass Save heat pump rebates are awarded based on three things: the equipment being on the Heat Pump Qualified Products List (HPQPL), an installer enrolled in the Heat Pump Installer Network (HPIN), and a Manual J load calculation that supports the proposed sizing. Whichever variant of geothermal ground loop types you're considering, those three boxes still need to be checked — without exception. See the Massachusetts HVAC Rebates Hub for the full 2026 rebate tier breakdown.

What to ask your installer

Are you enrolled in the Mass Save Heat Pump Installer Network (HPIN)? Provide your installer ID.
What's the specific make/model you're proposing, and is it on the current Mass Save HPQPL?
Will you provide the Manual J load calculation summary with the quote?
What's the itemized cost-after-rebate number?
What's the equipment warranty and the labor warranty?

Massachusetts incentives

Mass Save rebates that apply to this install

See the full Mass Save rebates hub

Verified 2026-05-27

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). 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 2026-05-27: 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 2026-05-27 against primary program documentation. We re-check before any publish.

Get a quote using these rates

Related Geothermal guides

Compare other Massachusetts HVAC system types

Frequently Asked Questions

How much does geothermal cost in Massachusetts?: Geothermal (ground-source heat pump) installation in Massachusetts typically costs $30,000–$60,000 depending on loop type and home size. Horizontal loops are cheapest but need open land; vertical-bore loops are standard in dense MA neighborhoods.
Is the 30% federal geothermal tax credit still available?: No. The federal Section 25D Residential Clean Energy Credit — the 30% geothermal credit — expired December 31, 2025 under the One Big Beautiful Bill Act. Property placed in service after that date does not qualify.
How long does a geothermal system last?: The indoor heat pump unit typically lasts 20–25 years; the ground loop itself can last 50+ years. That longevity helps offset the higher upfront cost, especially when paired with current Mass Save geothermal incentives.
Do I need a lot of land for geothermal?: Not necessarily. Horizontal loops need significant open land (roughly a third to half an acre), but vertical-bore loops only need enough yard for a drilling rig and a few small wellheads — workable on most Massachusetts suburban lots.

See your real cost after Mass Save rebates.

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