Ground Source Heat Pumps

Install a high-efficiency heat pump—and get up to $15,000 back.
A heat pump outside a residential home

Heat pumps can efficiently heat your home in the winter and double as a cooling system in the summer - while lowering greenhouse gas emissions.

Ground Source Heat Pumps

Install ground source heat pumps as your primary source of heating and receive rebates up to $15,000 from the Sponsors of Mass Save®.

  • Whole-home rebates are available to customers who install heat pumps as the sole source of heating and cooling. See the Whole-Home Heat Pump Verification Form for details.
  • Partial-home rebates are offered based on equipment size (tonnage) to customers who install heat pumps in a section of their home.  

Ensuring a home has received sufficient weatherization is the best first step in any heating and cooling project. This is a requirement for whole-home rebates and may qualify customers pursuing partial-home rebates for an additional $500 bonus. To schedule an on-site or virtual Home Energy Assessment, call 1-866-527-SAVE (7283).

Ground Source Heat Pump Rebates
Equipment Type RebateType Efficiency Requirements Rebate Amount
Ground Source
Heat Pumps
Whole Home3 Refer to the ENERGY STAR Certified List2 $15,000 per home
Partial-Home $2,000 per ton1, up to $15,000
  1. Tons are calculated based on AHRI cooling capacity divided by 12,000 BTUs. Rebate amount based on tons.  
  2. Ground source heat pumps must be ENERGY STAR certified, qualified, listed with, and certified by AHRI, and meet the program EER and AHRI outdoor unit configuration requirements.  


Enhanced residential rebates may apply, visit our income-based offers here.

If you are interested in installing a heat pump as part of a new construction or major renovation project, please visit Residential New Construction Program and Renovations and Additions Program to learn about how to participate in these programs.

Interested in 0% financing?

Apply for a Mass Save HEAT Loan prior to installing your equipment. The Sponsors® of Mass Save are buying down interest rates to make energy efficiency more affordable for Massachusetts residents. With our HEAT Loan, you could qualify for a loan of up to $25,000 toward qualified energy efficient home improvements with terms up to seven years, depending on your Sponsor and the loan provider. Heat pumps must be installed by a contractor participating in the Mass Save Heat Pump Installer Network in order to be eligible for HEAT Loan financing.


  • Offers valid only for residential customers in Massachusetts where Berkshire Gas, Cape Light Compact, Eversource, Liberty Utilities, National Grid, or Unitil is the Program Sponsor1
  • Equipment must be installed by a contractor participating in the Mass Save Heat Pump Installer Network between January 1, 2023, and December 31, 2023
  • Equipment must be ENERGY STAR certified
  • Equipment must be new and installed to replace oil, propane, natural gas, or electric baseboard (resistance) as primary heating system –
  • Rebate form and supporting documentation must be received by February 29, 2024

Please note, equipment installed in individual units in residential 5+ unit complexes, including 1-4 unit buildings that are part of larger complexes, are not eligible for whole-home rebates but may receive the partial-home rebate amounts. Program is subject to change without notice, including rebate and incentive levels. Rebate cannot be combined with other Mass Save incentives for the same equipment. Rebate amount not to exceed total installation cost. Sponsor reserves the right to conduct a verification inspection prior to rebate payment. Please allow eight weeks for rebate processing. Sponsor does not warrant the performance of installed equipment. See Terms and Conditions for full requirements.


1. Customers in municipal electric territories are eligible for heat pump rebates if they are a natural gas heating customer of one of the Sponsors of Mass Save. 

2. Sufficient weatherization can be demonstrated by satisfying at least one of the following requirements: (A) home was built during or after 2000, (B) Home Energy Assessment report indicates less than $1,000 worth of weatherization recommended, or (C) weatherization recommendations made during or after 2013 have been completed. Heat pumps installed for whole-home heating and cooling that do not meet the weatherization requirement may be eligible for partial-home rebate amounts. 

For more information about program details and the rebates offered on qualified equipment, call 1-800-232-0672 or email [email protected]