Insulation & air sealing
The single biggest rebate on the board in both states.
- Vermont: up to 90% cash back on air sealing and insulation
- New Hampshire: 75% off, to a cap of $6,000–$8,000
- Income-qualified households: 100% covered
Vermont is paying up to 90% of the cost to air seal and insulate. New Hampshire covers 75%, and up to $6,250 on a heat pump. We’ll tell you exactly which programs your address qualifies for — then hand you to a contractor who is enrolled to claim them.
Whether you are replacing a dying oil boiler or just tired of a cold north bedroom, there is almost certainly a New Hampshire or Vermont program that pays for part of it. Here is what each upgrade is worth in 2026.
The single biggest rebate on the board in both states.
One system that heats in January and cools in July.
No ducts, no problem — ideal for old Upper Valley houses.
Cooling for houses that already have ductwork.
The cheapest fix in the house, and it protects your warranty.
Ground-source heat, the long game on a rural property.
Do this first. Nearly every weatherization rebate requires it.
The One Big Beautiful Bill Act terminated the federal 25C and 25D credits for anything placed in service after December 31, 2025. If you were counting on 30% back at tax time for insulation, a heat pump or a geothermal loop, that is gone.
What replaced it is better, at least here. Efficiency Vermont raised its weatherization incentive to 90% cash back for 2026. NHSaves still covers 75% up to $8,000, and pays four figures per ton on heat pumps. Neither one requires you to wait for a refund check — most of it comes straight off the contractor’s invoice.
What the OBBBA changedCash back on Vermont weatherization, through the end of 2026 or until the funding runs out.
Cap on New Hampshire air sealing and insulation incentives, at 75% of project cost.
Top NHSaves heat pump rebate, for households leaving electric resistance heat.
What the federal 25C credit is worth on work placed in service in 2026.
Two minutes: your town, how you heat, and what is bothering you. Age of the house and whether you own it decide most of your eligibility.
We come back with the specific NHSaves or Efficiency Vermont programs your address qualifies for, what they pay, and what has to happen first.
If you want the work done, we introduce you to a contractor enrolled in the right program. They handle the audit, the install and the rebate paperwork.
We do not install anything. That is the point — we have no reason to steer you toward the upgrade with the fattest margin instead of the one your house actually needs.
NHSaves and Efficiency Vermont are completely different programs with different rules. We work in both, so nobody gets sent to the wrong one.
Every contractor we introduce is enrolled in the network their state requires — NHSaves participating or Efficiency Excellence Network.
Contractors pay us, not you. You get the rebate picture and an introduction, and you decide what happens next.
Both states gate their weatherization money behind an energy assessment, and for good reason: in a 200-year-old Upper Valley house, the difference between the upgrade you think you need and the one that actually pays is usually large.
A technician runs a blower-door test to measure how much air your house exchanges with the outside, checks insulation levels in the attic, walls, basement and rim joist, inspects the heating system, and looks for combustion safety problems. You get a written report ranking the fixes by payback.
In New Hampshire, the Home Performance with ENERGY STAR assessment costs a $100 copay against a real value of $400–$600, and the technician leaves $150–$400 of LEDs, smart power strips, low-flow showerheads and aerators installed on the spot. In Vermont, the audit is the doorway to the 90% weatherization rebate.
Send us the basics. We’ll come back with the programs your address is eligible for, what they pay in 2026, and which contractors in your town are enrolled to claim them.
What a blower-door test actually measures, what the technician installs for free on the day, and why both states gate their biggest rebates behind it.
Read more →The two states pay for different things in different ways. One table, both programs, so you can see where your address stands.
Read more →Heat loans and on-bill financing in both states, including options that cover the portion the rebate doesn’t.
Read more →No. Every program on this site is open to any homeowner who meets the eligibility rules, and you are free to hire whoever you like. What matters is that the contractor is enrolled in the right network: NHSaves weatherization work has to be done by a participating contractor, and Efficiency Vermont’s Home Performance with ENERGY STAR rebate requires an Efficiency Excellence Network member. We match you with contractors who already hold those credentials, because a non-participating installer can quietly cost you thousands.
Yes, for homeowners. We are paid by the contractors in our network when a match turns into a job. You are never charged, and you are never obligated to accept an introduction.
Not for work done in 2026. The One Big Beautiful Bill Act, signed July 4, 2025, terminated the 25C Energy Efficient Home Improvement Credit and the 25D residential clean energy credit for property placed in service after December 31, 2025. If your project was finished and in service by that date you can still claim it on that tax year’s return using IRS Form 5695. For work happening now, the state and utility rebates are the money that is left — and in both New Hampshire and Vermont they are larger than the federal credit ever was for weatherization. Full explanation here.
Old houses are the ones with the most to gain. A post-and-beam or balloon-framed Upper Valley farmhouse typically leaks the equivalent of a wide-open window, and dense-pack cellulose plus air sealing routinely cuts oil use by a quarter to a third. The order matters more than in a newer house: air sealing and attic insulation first, then the basement or crawlspace, then heating equipment. An auditor with a blower door will tell you where your particular house is losing it. See insulation and air sealing.
It varies by program. Efficiency Vermont’s Home Performance rebate is usually taken off the contractor’s invoice, so you never front the money. NHSaves weatherization incentives are typically handled the same way through the participating contractor. Equipment rebates — heat pumps, water heaters, central AC — are more often paid by check several weeks after the paperwork is submitted. In New Hampshire, 2026 installs must have rebate forms postmarked by January 30, 2027.
Figures checked July 2026. Rebate programs change their amounts, caps and equipment requirements during the year, and several are capped by available funding. Confirm the current offer with the program or your contractor before you sign anything.
Free, independent, and specific to your address. Most homeowners hear back the same day.