Window Replacement Cost Estimator

Built and maintained byKapil LodhiReviewed and updated June 2026 — Based on HomeAdvisor, RSMeans and ENERGY STAR cost data and contractor rate surveys across all 50 US states

How much does window replacement cost in 2026?

Window replacement costs $1,047 per window on average, based on real 2026 homeowner project data, with most homeowners paying between $300 and $1,500 per window installed. A whole-house project replacing 10–15 windows typically runs $4,500 to $22,500. The window unit itself makes up roughly 65–75% of the cost, with labor covering the rest. Use our free calculator above for an instant estimate based on style, frame, glass and installation method.

Window replacement cost calculator — by frame material

Window replacement cost by style

Insert (pocket) vs. full-frame window replacement

This is the single biggest cost decision — and the most misunderstood by homeowners — in any window project.

Window glass replacement cost

If only the glass pane is damaged — cracked, fogged between panes, or broken — and the frame itself is in good shape, glass-only replacement is a much cheaper fix than a full window replacement. Glass-only replacement typically costs $150 to $650 per pane, depending on glass type: standard double-pane runs $150–$400, Low-E coated glass costs more, and triple-pane or impact-rated specialty glass sits at the higher end. This is the right call for isolated glass failures on otherwise healthy windows — replacing the whole unit when only the glass has failed is money you don't need to spend. Use the "Glass-only replacement" option in the calculator above for an instant estimate.

Are there tax credits for window replacement?

Yes. The federal Energy Efficient Home Improvement Credit (25C) offers 30% of qualifying window material costs, capped at $600 per year, for windows installed on your primary residence. Labor costs don't qualify — only the window materials themselves. Windows must be ENERGY STAR certified and meet U-factor and solar heat gain coefficient (SHGC) requirements for your climate zone. Claim the credit using IRS Form 5695. Many states and utility companies also offer additional rebates — check energystar.gov/rebates for programs in your area.

How to read the NFRC label

Every certified replacement window carries a white NFRC sticker, and the four numbers on it describe the product far more reliably than the brand name or the showroom pitch does.

Which number you optimise for depends on where you live. In heating-dominated climates, U-factor is the one that decides your winter bills. In cooling-dominated ones, solar heat gain coefficient matters more, because keeping summer heat out of the room is the harder job. A window advertised as “energy efficient” without these figures attached has told you nothing specific.

What ENERGY STAR version 7.0 changed

The certification tightened, and it changed the maths in cold climates in particular. Under version 7.0, windows qualifying in the Northern zone need a U-factor of 0.22 or lower — a level that is difficult to reach with conventional double glazing, which is pushing Northern-zone products toward triple pane or more advanced glazing packages.

The practical consequence for a 2026 quote is that in northern states, “ENERGY STAR certified” can now mean a materially more expensive window than the same label implied a few years ago. Double pane with a low-E coating and argon fill still meets or exceeds the requirement across most other climate zones, and remains the value sweet spot there, while triple pane adds roughly 30% or more to the unit price in this estimator.

What you are paying the installer for

The unit is only half of what determines whether a window performs. The labor line covers work that is invisible once the trim goes back on:

• Removing the old unit without wrecking the surrounding trim, siding or plaster.
• Shimming the new one square, level and plumb — a racked window never operates smoothly and never seals properly, no matter what the label says.
• Flashing and sealing at the sill, which is the path water actually takes when a window leaks.
• Insulating the perimeter gap with low-expansion foam rather than stuffed fiberglass, which compresses and leaves a thermal bypass.
• Reinstating interior and exterior trim to a finished standard.

This is also the reason insert installation costs less. Keeping the existing frame and replacing the sash assembly avoids the 25% to 40% premium that full-frame replacement carries, and it is a sound choice when the existing frames are square, solid and dry. When they are not — rot at the sill, out-of-square openings, suspect flashing — full-frame is not an upgrade you are being upsold, it is the only method that lets the installer see and fix what is behind the frame.

Whole house at once, or phase it?

On the figures on this page, a whole-house project of 10 to 15 windows typically runs $4,500 to $22,500. Phasing almost always costs more per window, because each visit carries its own mobilization, and small orders lose the volume pricing that a full-house order attracts.

When the budget forces phasing anyway, sequence by consequence rather than by room. Failed seals, rotted sills and windows that no longer close come first, because those are active damage. The elevation facing prevailing weather comes next, since it drives both comfort and deterioration. Purely cosmetic replacements go last. If rot has already reached the framing around an opening, price that work through our vinyl siding cost estimator before committing to a window order, and the HVAC cost estimator is worth revisiting afterwards — a tighter envelope can change what system the house needs.

Frequently asked questions