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NH · New Hampshire Windows & Doors

Windows in New Hampshire.

NHSaves runs Home Performance with ENERGY STAR through Eversource NH, Liberty Utilities, Unitil, and the NH Electric Co-op. A $100 audit unlocks 75% off air sealing and insulation (up to $6,000 in envelope work), and the window upgrade rides in on the same visit. Standalone per-window rebates aren't on the NHSaves menu, but the bundled envelope plus 46% oil-heat dependency and the highest residential electric rates in New England carry the project.

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$100 audit
NHSaves HPwES (unlocks 75% off envelope)
0.22 U-factor
ENERGY STAR Northern threshold
15-30%
Heating-bill reduction (typical)
A New Hampshire home window upgrade in progress, ENERGY STAR Northern-Zone windows being set into the rough opening of a Merrimack County colonial
Why now · New Hampshire

Heating-oil deliveries have climbed every year.

New Hampshire residential heating oil ran ~$2.75/gallon in 2010 and is sitting at $3.95/gallon by 2025. NH burns oil in 46% of its homes (second-highest in the U.S. after Maine), and the state's electric supply rates have climbed alongside, the highest residential rates in New England. Windows cut your heating fuel and AC electric usage 15-30% on day one, so the bill drops by that much before the next supply-rate filing.

The hedge U-0.22 windows: 15-30% less oil burned
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New Hampshire residential heating oil price
2010–2025 · $/gallon, delivered
$0 low mid high 2010 2015 2020 2025 US avg $3.51/gal NH delivered oil $3.95/gal $2.75/gal Your reduced base (post-windows) savings stacked yearly $/gallon, residential
Heating oil price Your bill (post-windows) US national average
Source · EIA Weekly Heating Oil and Propane Survey, residential delivered prices, 2010–2025. NH state average and the US national line are both pulled from the same dataset.
Major fuel suppliers + electric utilities coveredEversource NH, Liberty Utilities, Unitil, NH Electric Co-op · statewide oil-dealer network (Irving, Rymes, Fred Fuller, Proulx Oil & Propane)
A real example · Merrimack County, NH

What a 13-window retrofit earns on the NH stack.

Take a 1,950 sq ft 1952 colonial in Merrimack County, oil-heated with central AC, with thirteen original wood-sash single-pane windows. Annual oil + electric bills run ~$3,100. The owner schedules an NHSaves Home Performance with ENERGY STAR visit (a $100 audit fee) which unlocks 75% off air sealing and insulation, up to a $6,000 envelope-work cap. Annual heating + cooling drops 24%, with comfort and condensation improvements that show up the first cold night.

See the pieces of the stack
01 · Why It Works Here

NH windows pay back on bills, not rebates.

New Hampshire doesn't run a direct per-window rebate. Instead, NHSaves bundles weatherization through Home Performance with ENERGY STAR, and the highest residential electric rates in New England plus 46% oil-heated homes do the rest. Every BTU you don't burn is paid for at premium prices, every season, every year.

Bundled
NHSaves HPwES weatherization
$100 audit unlocks 75% off air sealing + insulation (up to $6,000 envelope cap); window upgrade rides the same visit
0.22 U-factor
ENERGY STAR Northern threshold
Northern Region (zone 5A/6A); triple-pane + low-e + argon fill + warm-edge spacers
15-30%
Heating-bill reduction (typical)
Single-pane-to-Northern-Zone retrofit; compounds for 25 years on NH's high oil + electric rates
~7,100 HDD
NH annual heating degree days
North Country touches 8,500+ HDD, seacoast nearer 6,500. Drafty glass burns oil from October to April
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02 · The Components

Every value line, spelled out.

A New Hampshire windows project earns through three working channels: NHSaves bundled-envelope work at 75% off, ongoing oil + electric bill reductions on New England's highest electric rates, and the comfort + property-value lift that arrives the first cold night.

  • NHSaves Home Performance with ENERGY STAR audit$100 audit fee
  • Bundled attic + wall insulation work (75% off through NHSaves)up to $6,000 cap
  • Air sealing on rim joists, top plates, penetrations (covered)covered by NHSaves
  • Income-qualified deeper coverage (NH Home Energy Assistance Program)100% for eligible households
  • Year-1 oil heating savings on a typical NH home (46% oil-heated)~$750/yr typical
  • Year-1 AC electric savings (NH has New England's highest residential rates)~$360/yr typical
  • Resale-value lift on documented ENERGY STAR window replacement+1-3% home value
  • Equipment lifespan and warranty30-50 yrs · lifetime glass
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03 · Install Timeline

From first call to tighter glass.

A typical New Hampshire windows project runs 7–10 weeks from the NHSaves audit to commissioning, with bundled envelope work happening in the middle.

01.
Free Home Energy Score + NHSaves HPwES audit
An NHSaves-approved BPI auditor walks the house, runs a blower-door test, and writes the Home Performance with ENERGY STAR recommendations. Audit fee is $100 (waived for income-qualified households).
Week 1
02.
Bundled weatherization (air sealing + insulation at 75% off)
Air sealing and insulation work happens here, paid through NHSaves at 75% coverage up to the $6,000 envelope cap. The envelope tightens before the windows go in, so savings compound from day one.
Weeks 2-4
03.
Window product selection
ENERGY STAR Most Efficient Northern Region (U-factor 0.22 or lower). Most major brands (Andersen, Pella, Marvin, Harvey) carry qualifying lines. Order placed; lead time 3-5 weeks for stock sizes.
Weeks 3-6
04.
Town permits + installation
Municipal building permit, install over 1-3 days. NFRC labels photographed for the NHSaves project file. The cold radiant draft disappears the night of install.
Weeks 6-8
05.
NHSaves close-out + bill-savings begin
Contractor files the close-out package with NHSaves documenting both the envelope work and the window upgrade. Comfort + bill reduction begins immediately, full payback compounds across 25-30 years.
Weeks 8-10
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04 · Honest FAQ

The real questions NH homeowners ask.

Actual questions that come up in the first installer conversation, answered for a typical New Hampshire homeowner in 2026.

Does NHSaves have a direct per-window rebate?

Not in 2026. NHSaves runs Home Performance with ENERGY STAR as a bundled-envelope program: the $100 audit visit unlocks 75% off air sealing and insulation up to a $6,000 envelope cap, and the window upgrade rides on the same visit. The dollar value sits in the bundled work plus the heating + cooling bill reduction across the windows' 25-30 year life. For income-qualified households, NH's Home Energy Assistance Program covers the bundled scope at 100%.

How does the NH path compare to MA's $75/window rebate?

Different structure. MA pays per-window cash; NH pays 75% of the bundled envelope work that lets your new windows actually perform. On NH's New England-leading electric rates and 46% oil-heat dependency, the bill-savings path delivers more dollar value across a 25-year window life than a one-time per-window rebate would.

What U-factor do my new windows need?

0.22 or lower for ENERGY STAR Most Efficient in New Hampshire's climate zone (5A in the southern tier, 6A in the central and north). Triple-pane achieves this comfortably and starts to make sense above the lakes region; high-end double-pane qualifies in the southern tier. Check the NFRC label on each window for U-factor, SHGC, and visible transmittance.

Does NHSaves cover all utility customers?

Yes. NHSaves is the umbrella program for Eversource NH, Liberty Utilities, Unitil, and the New Hampshire Electric Co-op (essentially the entire state). The Home Performance with ENERGY STAR audit applies, and the bundled work is paid through your utility's energy-efficiency allocation under the state's System Benefits Charge.

Beyond the bundled weatherization, what else makes the math work?

Three additional levers: (1) NH burns oil in 46% of homes at ~$3.95/gallon, so every gallon you don't buy is real cash; (2) NH carries the highest residential electric rates in New England, so every cooling-load kWh you don't burn is worth more here than across the border; (3) noise, condensation, and resale-value benefits arrive on day one and compound for the life of the windows.

I have an old farmhouse, should I just add storm windows instead?

For some homes, yes, and NH has a lot of these. If your wood-sash originals are still operable and the wood is sound, a quality interior storm panel (Indow, Innerglass) or low-E exterior storm can deliver double-pane-equivalent performance without touching the original character. This is often right on antique homes in places like Portsmouth, Exeter, or the lakes region where the windows are part of the architecture. The Score weighs storm-versus-replace based on the condition of your existing units.

All New Hampshire programs

The full New Hampshire upgrade menu.

Every New Hampshire program a homeowner can layer in. The badge marks the ones that pair most naturally with the program on this page.

NH · Solar + Net Metering 2.0
A tighter envelope drops the kWh base, which makes every rooftop kWh worth more against your remaining load.
NH · NHSaves Heat Pumps
New windows reduce heating and cooling load, which lets a heat pump run smaller, longer, and quieter.
Stacks well
NH · NHSaves Weatherization
Windows and insulation are the two halves of the envelope. NHSaves bundles them on the same HPwES visit.
Stacks well
NH · Battery Storage
A tighter house holds temperature longer during winter outages, stretching every battery-kWh.
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Other states and programs.

Looking for the same kind of program in another state, or a different program in yours? Tap any pill to jump.

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Solar Heating & Cooling Insulation Windows & Doors Energy Storage

See how windows fit your specific New Hampshire home.

Your Home Efficiency Score counts your single-pane windows, runs the NHSaves HPwES envelope math, and shows your real oil + electric bill drop based on your utility, fuel supplier, and house size.

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