If you own a home in Massachusetts and you’ve been putting off energy efficiency upgrades because of the upfront cost, the Mass Save HEAT Loan is worth your attention. It’s one of the most practical and underused resources available to homeowners in the state — and it applies whether you’ve been in your home for years or just bought one.
What Is the HEAT Loan?
The Mass Save HEAT Loan is a 0% interest loan available to owner-occupied 1 to 4 family residences in Massachusetts, offering between $2,000 and $25,000 to finance qualifying energy efficiency upgrades. No interest — for the life of the loan. Loan terms are typically up to seven years, though that varies by lender and borrower, and the $25,000 maximum applies over the lifetime of your eligible upgrades.
What Can It Be Used For?
Eligible projects include new heating systems, hot water systems, insulation upgrades, window replacements, and other qualifying efficiency improvements as determined by the Mass Save program. Heat pumps are among the most popular uses, and any remaining project balance after rebates can be financed at 0% interest through the loan program.
Is There an Income Component?
As of April 1, 2025, loan terms are tiered based on income. Homeowners above 135% of the state median income receive a five-year term rather than seven years. Lower and moderate income households may qualify for longer terms and additional incentives — it’s worth checking your eligibility before assuming anything.
How Do You Access It?
The process starts with Mass Save, not a bank. Here’s the basic sequence:
- Schedule a free Home Energy Assessment at masssave.com
- Complete any required weatherization recommendations
- Get a quote from a participating contractor for your eligible upgrade
- Apply through a participating lender for the HEAT Loan — local banks including Eastern Bank and Middlesex Savings participate, among others
- Complete the installation and receive financing at 0% interest
You’ll need to be the homeowner, have a current residential gas or electric account with a participating Mass Save sponsor (including Eversource, National Grid, Berkshire Gas, Liberty Utilities, or Unitil), and be approved by a participating lender.
Why It Matters for Buyers Too
If you’re purchasing a home — especially an older one — energy costs are part of the real picture of what you’ll be spending each month. Knowing that a resource like the HEAT Loan exists means that an oil-heated home with older systems doesn’t have to stay that way. Upgrades that lower your monthly costs and increase comfort are more accessible than most buyers realize.
At River Flows Realty, we think understanding the full cost of homeownership — and the resources available to you — is part of making a good decision. I’ve successfully acquired Heat Loans and helped others to as well. If you have questions about how programs like this factor into buying or owning a home in Western Massachusetts, Lindsey is happy to talk it through.