Ground Source Heat Pumps

Install ground source heat pumps as your primary source of heating and receive rebates up to $25,000 from the Sponsors of Mass Save®.
A heat pump outside a residential home

Please Note: The Sponsors of Mass Save® have announced changes planned to residential heating, cooling and water heating incentives. These changes will impact incentives for eligible installations completed between January 1, 2024 and December 31, 2024. A complete list of 2024 Residential Heating & Cooling Incentives can be found here.

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 Rebate Type Efficiency Requirements Rebate Amount Enhanced Amount* (Income Qualified) Federal Tax Credit
Ground Source
Heat Pumps
Whole Home Refer to the ENERGY STAR Certified List** $15,000 per home $25,000 per home 30% of purchase and installation costs ****
Partial-Home $2,000 per ton***, up to $15,000

*Visit for additional information. Pre-existing fuel type must be oil, propane, or electric resistance. Cape Light Compact enhanced heat pump rebates differ from the amount listed - customers are eligible for 80% of the installed cost of qualifying heat pump systems.  

**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.  

***Tons are calculated based on AHRI cooling capacity divided by 12,000 BTUs. Rebate amount based on tons.  

****Disclaimer: This information does not represent tax or legal advice. Please consult your tax advisor for further details.  


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, this rebate is only available to residences that are occupied full time during the winter heating season. Equipment must be installed in individually owned 1-4 unit buildings or townhouses to receive the whole-home rebate. 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. Customers with municipal gas heating are not eligible for heat pump rebates. 

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 1-888-855-0340 or email [email protected].