Mass Save® HEAT Loan

0% Interest. 100% Easy.

From the attic to basement, we're here to help you with your home energy upgrades. The Mass Save® HEAT Loan offers zero interest financing opportunities up to $50,000* total for energy-efficient home upgrades. That includes up to $50,000 on the installation of air source and ground source heat pumps, and up to $25,000 for the installation of insulation, combustion heating systems, and more. 

*Interest-free financing of up to $50,000 is only available to residential customers who are installing eligible heat pumps. For all other energy efficient upgrades, interest-free financing opportunities are available up to $25,000.


To learn more and get started, call 866-527-SAVE (7283). You'll receive guidance on programs and incentives available to improve the efficiency of your home and where financing can help. A site visit may be required. Once your energy efficiency improvement is identified as one eligible for the HEAT Loan, applying is easy.


How to Apply for a HEAT Loan


  • Step 1: Choose a contractor. Make sure to get a signed proposal from your chosen contractor on their official letterhead. The Sponsors of Mass Save recommend getting multiple quotes from licensed and insured contractors before choosing one. To find a participating contractor, click here.
  • Step 2: Complete and submit a copy of the Intake Form to your HEAT Loan Program Administrator. Include your signed contractor proposal and any additional required documentation. If your work meets program eligibility requirements, you will receive an Authorization Form.
  • Step 3: Secure the loan. Submit your completed Authorization Form to your selected participating lender. If approved, the lender will provide you with a two-party check made payable to you and your contractor(s). To view a complete list of participating lenders, click here. Lenders who are offering loans up to $50,000 are listed below.
    Lenders who are offering loans up to $50,000 are listed below.
    Lender Owner Occupied $50k Loan Non-Owner Occupied $50k Loan
    Align Credit Union Yes No
    Alpha Credit Union Yes No
    Athol Savings Bank Yes No
    Bank Five Yes Yes
    Berkshire Bank Yes Yes
    BayCoast Bank Yes Yes
    Boston Firefighters Credit Union Yes Yes
    Cambridge Teachers Federal Credit Union Yes Yes
    Clinton Savings Bank Yes Yes
    Eastern Bank Yes Yes
    Energy Credit Union Yes No
    Franklin First Federal Credit Union Yes No
    Hanscom Federal Credit Union Yes No
    Homefield Credit Union Yes Yes
    Lexington MA Federal Credit Union Yes Yes
    Main Street Bank Yes No
    Martha's Vineyard Savings Bank Yes No
    Massachusetts Family Credit Union Yes No
    Mechanics Cooperative Bank Yes Yes
    Members Plus Credit Union Yes Yes
    Metro Credit Union Yes Yes
    Mill Cities Community Investments Yes Yes
    Mills42 FCUs Yes No
    MutualOne Bank Yes Yes
    Naveo Credit Union Yes Yes
    New Bedford Credit Union Yes Yes
    Pioneer Valley Federal Credit Union No No
    Plymouth County Teachers Federal Credit Union Yes No
    Shrewsbury Federal Credit Union Yes No
    St. Anthony of New Bedford Federal Credit Union Yes Yes
    Tremont Credit Union Yes No
    UMassFive College Federal Credit Union Yes Yes
    Worcester Community Housing Resources, Inc Yes Yes
  • Step 4: Complete the upgrade(s). To pay your contractor, simply sign over the bank check. 
  • Step 5: Apply for a rebate. Visit to apply for any available rebates.
  • Step 6: Complete your verification inspection. Call 866-527-SAVE for details on completing this required verification.



Enter your zip code and heating fuel type to find your HEAT Loan Administrator and start your application.
Zip Code
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Eligibility Requirements

  • The HEAT Loan is available to qualified customers participating in the Mass Save Program.
  • Loan applicant must be the homeowner.
  • Residents must have a current residential electric account.
    • Municipal electric customers can take advantage of the HEAT Loan offer if the home is heated with natural gas, provided by a Mass Save Program Sponsor.
  • Financing is only available for qualifying energy-efficient improvements outlined within the HEAT Loan packet.
  • Financing is contingent upon loan approval from a participating lender.