Is the federal tax credit for windows still available in 2026?

No. The Section 25C tax credit for windows (30%, up to $600) expired December 31, 2025 under the One Big Beautiful Bill. The HEAR program rebate of up to $1,600 for windows and doors remains available for income-qualified households.

What ENERGY STAR certification do windows need for HEAR rebates?

HEAR generally requires ENERGY STAR Most Efficient certification — a higher standard than basic ENERGY STAR. Requirements vary by climate zone: U-factor of 0.20 in the coldest zones to 0.40 in the warmest. Verify your specific windows meet Most Efficient specs before purchasing.

Is window replacement actually worth it from an energy savings standpoint?

It depends heavily on what you currently have. Replacing single-pane windows delivers significant savings — often paying back in 3–7 years in cold climates. Replacing drafty double-pane windows is often better handled with weatherstripping and caulking first, which costs 95% less and addresses the primary issue.

Do storm windows qualify for HEAR rebates?

Generally no — storm windows added to existing frames are usually not HEAR-eligible. Full window unit replacement is typically required. Check your specific state program, as a few states have broader definitions of qualifying improvements.

Does the HEAR $1,600 window rebate cover the whole house?

$1,600 is the maximum per household regardless of how many windows you replace. On a whole-house project of $10,000–$20,000, the rebate covers 8–16% of costs. It's meaningful but not transformative for large projects.

Can I get both window and insulation rebates from HEAR?

It depends on your state. Some states combine windows, doors, and insulation into a single $1,600 HEAR category. Others treat them separately. Check your state's program documentation or administrator to confirm whether you can claim both categories independently.

Window Replacement Rebates 2026: What Changed After the OBBB

Published: February 20, 2026

What Happened to Window Tax Credits

Through 2025, homeowners could claim a 30% federal tax credit on qualifying window replacements under Section 25C — up to $600 per year. Not a huge credit, but meaningful on a $5,000–$8,000 window job.

The One Big Beautiful Bill eliminated 25C effective January 1, 2026. For windows installed in 2025, the credit still applies on your 2025 return. For 2026 and beyond, it's gone.

The HEAR program's window and door category remains available, covering up to $1,600 for qualifying windows, doors, and skylights. This is a higher maximum than the old 25C credit for most window projects, but it comes with income restrictions that 25C didn't have.

The Honest Reality About Window Energy Savings

Windows get more marketing attention than their energy impact justifies. Before deciding whether to replace windows, you need to understand what they actually do and don't do for energy efficiency.

Windows account for roughly 25–30% of residential heating and cooling energy loss — but that's primarily through air infiltration (drafts) rather than conduction through the glass itself. In a typical older home, air sealing existing windows often delivers 60–70% of the energy savings of full replacement at 5–10% of the cost.

Full window replacement makes financial sense when:

Windows are single-pane (pre-1980 era)
Frames are deteriorating, warped, or failing to seal properly
Condensation appears between panes of double-pane windows (seal failure)
Windows are operationally difficult to open or close (security and comfort issue)

Window replacement makes less financial sense when:

Windows are relatively modern double-pane with intact seals
The main problem is drafts — addressable with weatherstripping and caulking
Budget is limited — insulation and air sealing deliver more energy savings per dollar

What the HEAR Window and Door Rebate Covers

HEAR covers windows and doors up to $1,600 total (combined with insulation in some state interpretations — check your state's program). Requirements:

Windows must meet ENERGY STAR Most Efficient requirements, not just basic ENERGY STAR certification
U-factor and Solar Heat Gain Coefficient (SHGC) requirements vary by climate zone
Installation must be by a qualified contractor
Income requirements: below 80% AMI for 100% coverage, 80–150% AMI for 50%

ENERGY STAR Most Efficient windows in 2026 generally require:

Climate Zone	U-Factor Maximum	SHGC
Northern (zones 6–8)	0.20	Any
North-Central (zones 4–5)	0.25	Any
South-Central (zone 3)	0.30	≤0.25
Southern (zones 1–2)	0.40	≤0.25

These specifications favor triple-pane glass in cold climates. Most double-pane windows meet basic ENERGY STAR but not Most Efficient. Verify the specific rating of windows you're considering before assuming HEAR eligibility.

Window Replacement Costs in 2026

National average installed costs per window:

Vinyl double-pane, basic: $400–$700 per window
Vinyl double-pane, ENERGY STAR Most Efficient: $600–$900 per window
Fiberglass double-pane: $800–$1,200 per window
Wood composite triple-pane: $1,000–$2,000 per window
Full-house replacement (15–20 windows): $8,000–$25,000

At these costs, the HEAR maximum of $1,600 covers 2–4 windows in a typical project. For a whole-house replacement, it's a meaningful contribution but not the dominant factor in the financial decision.

Where Window Replacement Actually Pays Off

The return on window replacement investment is highly context-dependent:

Single-Pane Windows: Replace Them

Single-pane windows (U-factor around 1.0) lose heat at roughly 5x the rate of a modern double-pane window (U-factor 0.30). In a cold climate with significant heating-degree-days (Chicago, Minneapolis, Boston), single-to-double-pane replacement can reduce heating costs by $200–$400 annually per window depending on window size and orientation.

With 15 windows at $300/year average savings: $4,500/year in savings. A $15,000 window project pays back in about 3.3 years. Even without HEAR, this is financially rational in cold climates with single-pane windows.

Drafty Double-Pane Windows: Weatherstrip First

If your double-pane windows are drafty, replacing them might not be the right move. First:

Caulk around exterior window frames with quality polyurethane caulk ($8–$15/tube, 5 minutes per window)
Replace weatherstripping on operable windows ($ 5–$20 per window, 15 minutes)
Add rope caulk to windows in secondary rooms (temporary, removable seasonal solution)

These steps often eliminate 50–80% of window-related air infiltration at 2–5% of replacement cost. Then re-evaluate whether full replacement is warranted.

Seal Failures on Double-Pane Windows: Repair vs. Replace

Foggy double-pane windows (condensation between panes) indicate seal failure. The options:

Window glass replacement (not full unit): $200–$400 per window, restores performance. Doesn't qualify for HEAR but is much cheaper than full replacement.
Full window replacement: $600–$1,200 per window, full performance and rebate eligibility if replacement meets specs.

If the frames are structurally sound, glass-only replacement is usually the better financial decision even without the rebate.

Storm Windows: A Middle Path

Interior or exterior storm windows added to existing single-pane windows deliver 50–75% of the thermal performance improvement of full window replacement at 30–50% of the cost. They're not HEAR-eligible in most state programs, but they're a financially rational intermediate step for homeowners who can't currently afford full replacement.

Door Rebates Under HEAR

The HEAR window category also covers doors — specifically insulated exterior doors that meet ENERGY STAR requirements. Qualifying steel or fiberglass insulated doors typically have:

U-factor ≤ 0.17 (steel) or ≤ 0.18 (fiberglass)
Proper weatherstripping installed
Sill sweeps and threshold seals

Door replacement costs $500–$2,000 installed per door. The HEAR rebate of up to $1,600 can cover 1–2 doors for income-qualified households. Exterior door replacement is often one of the highest-return-per-dollar improvements for homes with old, poorly-fitting doors — not because of conductive heat loss through the door, but because air infiltration around door frames is typically significant.

Combining Windows With the Full HEAR Stack

Windows and doors compete with insulation for the same $1,600 HEAR category in some state implementations. In states where they're separate categories, you can claim both. Check your state's specific program structure before planning your project budget.

For most comprehensive projects, windows and doors are a lower priority than insulation, panel upgrades, heat pumps, and water heaters — which offer larger rebates and higher energy savings. Budget HEAR strategically: claim the high-value categories first, then apply remaining budget to windows if they're genuinely in poor condition.

Learn to prioritize across the full HEAR stack with the rebate stacking guide, and check what's available in your area at New York window rebates or California window programs.