Hybrid heat pumps — efficiency, with a backup.
A hybrid setup pairs an efficient heat pump with your existing furnace or boiler. The heat pump does most of the heating and all of the cooling, while your existing system stays available as backup on the very coldest days. It's a lower-commitment way to cut fuel use — and it still earns Mass Save rebates.
Why hybrid
Most of the savings, none of the worry
A hybrid (or supplemental) system is ideal if you're not ready to fully retire your furnace or boiler, or you want the reassurance of a fossil-fuel backup for the coldest snaps. The heat pump carries the majority of your heating hours efficiently — which is where most of the savings are — and adds cooling you may not have had.
On the rare deep-cold days, the system can lean on your existing heat. It's the pragmatic middle path, and it still qualifies for Mass Save incentives, which Nexis files for you.
What you get with a hybrid system
- Heat pump does the heavy lifting — efficient heating across most of the season, plus summer cooling.
- Existing system as backup — your furnace or boiler stays available for the coldest days.
- Lower fuel bills — dramatically less oil, propane, or gas burned over a winter.
- Adds cooling — many homes gain efficient central or ductless cooling they didn't have.
- Mass Save eligible — partial/whole-home rebate depending on configuration, filed by us.
- 0% HEAT Loan — up to $25,000 at 0% interest.
Equipment we install
How your project runs
Free assessment
We review your current system, home, and heating bills.
Design
We plan the heat pump + controls integration and your rebate numbers.
Install
Licensed crews integrate the heat pump with your existing heat.
Rebates
We file the applicable Mass Save rebate and HEAT Loan.
Hybrid systems still earn Mass Save
Depending on how much of your heating the heat pump covers, hybrid setups qualify for Mass Save partial- or whole-home rebates plus the 0% HEAT Loan. We'll show which tier your configuration earns. (Figures as of 2026, verified at your assessment.)
For full program details, visit the official Mass Save heat pump website.
Is a hybrid system right for you?
Book a free assessment — we'll show how much fuel a hybrid setup would save, the rebate it earns, and the monthly payment.
Hybrid FAQ
Answers, straight up
It's a heat pump installed alongside your existing furnace or boiler. Smart controls run the efficient heat pump for most of the season and cooling in summer, and fall back to your existing heat only on the coldest days.
Many homeowners do, and we're happy to design that. Hybrid appeals to people who want to keep a fossil-fuel backup, aren't ready to remove existing equipment, or have a home where full electrification needs more weatherization first. It captures most of the savings with less commitment.
Yes. Hybrid and supplemental configurations qualify for Mass Save rebates (tier depends on how much heating the heat pump provides) plus the 0% HEAT Loan. We file the paperwork.
Yes. A hybrid install is a natural stepping stone — once you're comfortable and any weatherization is done, the heat pump can become your sole heating source.
Ready when you are
Book my free assessment
Same-week appointments across eastern MA. We bring the rebate math, you get a lower bill and a more comfortable home — $0 down to start.
