If you’re thinking about upgrading your home with a high-efficiency heat pump, insulation, or other energy improvements, you may have heard about the Mass Save HEAT Loan. It’s one of the most valuable—but often misunderstood—financing options available to Massachusetts homeowners.
Here’s what the HEAT Loan is, how it works, and when it makes sense for your home.
What Is the Mass Save HEAT Loan?
The Mass Save HEAT Loan is a 0% interest financing program that helps eligible Massachusetts homeowners pay for approved energy-efficiency upgrades.
Instead of paying everything upfront, the HEAT Loan allows you to spread the cost of improvements over time—without paying interest.
Eligible projects often include:
- Cold-climate heat pumps
- Insulation and air sealing
- Heat pump water heaters
- High-efficiency heating equipment
- Battery storage systems
- Certain electrical upgrades needed to support these improvements
The program is offered through Mass Save, with participating lenders across the state.
How Does the HEAT Loan Work?
While the details can vary slightly by project and lender, the general process looks like this:
- Complete a Mass Save Energy Assessment
Your journey typically starts with a no-cost home energy assessment through Mass Save. This assessment identifies energy-saving opportunities and determines which upgrades are eligible for incentives and HEAT Loan financing. - Choose Your Improvements
Based on the assessment, you can move forward with qualifying upgrades—like installing a heat pump system, improving insulation, or other approved efficiency improvements. - Apply for the HEAT Loan
Once your project is approved, you apply for the HEAT Loan through a participating bank or credit union. Approval is based on creditworthiness, similar to other consumer loans. - Repay Over Time—At 0% Interest
Approved homeowners can finance up to the program maximum (currently up to $25,000 for qualifying projects) with no interest, typically over a term of up to 7 years.
Who Qualifies for the HEAT Loan?
The HEAT Loan is available to homeowners served by participating Mass Save utilities.
Residents must have a current residential electric or gas account with one of the following Mass Save Sponsors:
- Berkshire Gas
- Cape Light Compact
- Eversource
- Liberty Utilities
- National Grid
- Unitil
Homes served by municipal electric utilities often do not qualify for the HEAT Loan. However, municipal electric customers may still be eligible if their home is heated with natural gas provided by a Mass Save Sponsor.
Because utility structures vary widely across Massachusetts, eligibility can depend on both your electric and heating utility provider.
Why Homeowners Use the HEAT Loan
The biggest advantage is simple: zero interest.
That means:
- More affordable monthly payments
- No interest costs over the life of the loan
- The ability to make energy upgrades sooner instead of waiting years to save up
For many homeowners, monthly loan payments can be partially—or fully—offset by lower energy bills after upgrading to high-efficiency systems.
HEAT Loan + Heat Pumps: A Popular Pair
Heat pumps are one of the most common upgrades financed through the HEAT Loan—and for good reason.
Cold-climate heat pumps:
- Replace oil, propane, or gas systems with efficient electric heating and cooling
- Deliver high performance even in New England winters
- Qualify for both Mass Save rebates and HEAT Loan financing
Using the HEAT Loan can make the transition away from fossil fuels significantly more accessible.
Can You Use the HEAT Loan with Solar?
While the HEAT Loan is designed specifically for energy-efficiency measures (not solar installations), it often pairs well with solar planning.
Why? Because heat pumps run on electricity—and solar can help supply it.
Many homeowners choose to:
- Use the HEAT Loan for heat pumps or efficiency upgrades
- Install solar separately to help offset the increased electric usage
When planned together, the result is a more efficient, lower-carbon, and more predictable energy future. Learn more here.
Is the HEAT Loan Right for You?
The HEAT Loan can be a great option if:
- You want to upgrade your home’s efficiency without paying everything upfront
- You qualify for Mass Save incentives
- You’re planning a heat pump or electrification project
- You prefer predictable monthly payments over large one-time costs
That said, it’s not the right fit for every situation. Project eligibility, home conditions, and long-term goals all matter.
Get Help Navigating Your Options
At New England Clean Energy, we help homeowners understand how Mass Save incentives, HEAT Loan financing, heat pumps, and solar fit together—so you can make informed decisions with confidence.
If you’re curious about what upgrades make sense for your home—or how financing could work for you—our team is here to help.
Schedule a free consultation and start planning your next energy upgrade!
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