Most window companies bury this. We lead with it: replacing single-pane windows with the right ENERGY STAR units can earn a Mass Save rebate and 0% financing — and we handle the assessment and paperwork for you.
If you've read that windows come with a federal tax credit, that information is now out of date. The federal 25C energy-efficient home improvement credit for windows expired at the end of 2025 and isn't available for windows installed in 2026.
Here's the good news for Massachusetts homeowners: the state's Mass Save program — funded through Eversource, National Grid and the other utilities — is still active, and it's actually the better deal for most window projects. It pairs a per-window rebate with 0% financing, and we handle the whole process with you.
Mass Save pays a rebate for each qualifying window when you replace single-pane windows with ENERGY STAR Most Efficient certified units. We spec products that qualify.
Mass Save's HEAT Loan offers 0% interest financing for qualifying windows, insulation and heat pumps — no origination or prepayment fees. Terms depend on household income.
Beyond the rebate, ENERGY STAR Most Efficient windows cut drafts and noise and lower heating and cooling bills year after year — the savings that outlast any one-time incentive.
The reason most homeowners miss the rebate is the order of operations. The window rebate is tied to completing weatherization first. We coordinate it so nothing falls through.
A Mass Save specialist visits and recommends weatherization. It's free, no-obligation, and often comes with free or discounted upgrades. We help you book it.
Air sealing and insulation from the assessment — heavily subsidized for most households, often free for income-eligible ones. This is what unlocks the window rebate.
We install ENERGY STAR Most Efficient windows that meet the rebate requirements — sealed, square and warrantied.
We provide the documentation and help you submit, so the rebate and any HEAT Loan paperwork actually get filed — not forgotten.
Pairing windows with air sealing and insulation is the combination that actually drops a Massachusetts energy bill. Mass Save covers a large share of insulation costs for standard households, and the full cost for income-eligible ones — so the "extra step" usually pays for itself before the windows even go in.
Program rules are set by Mass Save and can change — we confirm current terms at your assessment.
Tell us about your project and we'll send a real price range, confirm what qualifies for Mass Save, and walk you through the assessment — no high-pressure pitch, no obligation.
No. The federal 25C energy-efficient home improvement credit for windows expired at the end of 2025 and isn't available for windows installed in 2026. For Massachusetts homeowners, Mass Save is now the main incentive — and it's still active.
Yes. Mass Save offers a per-window rebate when you replace single-pane windows with ENERGY STAR Most Efficient certified windows, completed as part of the weatherization recommendations from a Mass Save home energy assessment. We help confirm eligibility and handle the paperwork.
It's a free, no-obligation visit where a Mass Save energy specialist reviews your home and recommends weatherization improvements. Completing the recommended work is generally what unlocks the window rebate, and the assessment itself often comes with free or discounted upgrades. We help you book it.
The HEAT Loan is 0% interest financing for qualifying energy-efficiency improvements, including ENERGY STAR replacement windows done with weatherization, insulation and heat pumps. Terms depend on household income, and there are no origination or prepayment fees.
Usually yes — the window rebate is tied to completing the weatherization the home energy assessment recommends (such as air sealing and insulation), which is often heavily subsidized or free for income-eligible households. We coordinate the whole sequence so you don't have to chase it.
Program details are set by Mass Save and updated periodically. We confirm the current rebate amounts, HEAT Loan terms and requirements with you at the time of your free home energy assessment.
Price your windows in seconds, then we'll line up the Mass Save assessment and paperwork.