Mass Save (Unitil, National Grid)
Mass Save Insulation & Air Sealing Rebates is available to homeowners and renters in Haverhill, MA.
Mass Save covers 75% of insulation and air sealing costs (100% for income-eligible customers) following a free home energy assessment. Eligible work includes attic, wall, and basement insulation plus air sealing to reduce heating and cooling costs.
Rebate covers 75% of quoted cost, or 100% if income-qualified
Official program page checked live on 2026-06-22.
Data last verified 2026-06-09. How we verify our data.
In Haverhill, MA, you can combine this program with other local help to cut your cost:
A grant-savvy contractor in Haverhill, MA can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.
You will likely need a contractor to apply
Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Haverhill early keeps your application moving.
Get matched with a contractorEach program sets its own contractor rules. Check the official program page for exact requirements.
Documents you will likely need
Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.
Deadline: Year-round availability
Ask us. It is free, and a real person answers within a business day.
Email us about this program75-100% of cost covered.
Mass Save Insulation & Air Sealing Rebates is open to homeowners and renters in Haverhill, MA. It has no income limit.
Apply directly with Mass Save (Unitil, National Grid) using the official program link on this page or call (866) 527-7283. There is no middleman and no fee.
Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.
Rebates and discounts that stack on top of any grant. Most are free to use.
This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.
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