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How much does window replacement cost?

Estimate what replacing your windows costs, and how long it would take to earn that back on your energy bill. The honest answer surprises most people, so we show the maths.

Windows almost never pay for themselves on energy savings alone. Replacing every window in a typical home costs roughly $12,180 and saves, on ENERGY STAR's own figures, a few hundred dollars a year. That is a payback of around 21 years, which is longer than the windows are likely to last. Replace windows because they are rotten, draughty, noisy or ugly. Those are good reasons. "They will pay for themselves" is not one, whatever the salesperson tells you.

§ 01 Your numbers

Median installed cost per window from DOE's efficiency-measures database (retail price plus modelled install labour).
A 2,000 to 2,500 sq ft house typically has somewhere around 15 to 20 windows.
Used to scale the energy saving. ENERGY STAR's figures assume you replace them all, so replacing half saves about half.
ENERGY STAR's modelled annual saving for a whole-home replacement. Replacing single-pane saves roughly twice what replacing double-pane does.
Set by the frame material above. DOE models about 2.8 hours of labour per window. Override it if you have a real quote.
Estimated cost
$12,180

Typical range $9,135 – $17,052

  • Windows (materials)$7,515
  • Installation labour$4,665
  • Total$12,180
See next steps →

§ 02 The return

Cost per window$812
Energy bill saved$568/yr
Pays for itself in21.4 yr

Cost is our model, built on DOE's product-level pricing. DOE states its database is not intended to price a specific project, and real quotes vary widely by region, house and contractor. ENERGY STAR's savings are modelled, not metered, and assume a whole-home replacement.

Where the money goes

Windows (materials)$7,515
Installation labour$4,665

When it pays back

Cumulative cash flow. The line crosses zero the month your accumulated savings have repaid what you spent.

break-even n/a

Recommended next steps

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A five-figure job. Compare per-window pricing, check the warranty, and be clear it is a comfort upgrade rather than an investment.

By the numbers

  • DOE: the median vinyl replacement window runs about $497 for the unit plus about $308 of install labour, from product-level pricing NREL collected from retailers and RSMeans.
  • ENERGY STAR: replacing single-pane clear windows across a whole 2,376 sq ft home saves $493 to $568 a year depending on climate zone. Replacing double-pane clear windows saves only $253 to $373.
  • EPA: low-e storm windows fitted over existing single-pane glass capture much of the same benefit for a fraction of the cost. If your goal is genuinely the energy bill, price those first.

This cost is our model, not a published statistic. No free source publishes an installed window-replacement price. We build it from DOE's product-level pricing plus DOE's own modelled install labour, and DOE states plainly that its database "is not intended to provide specific cost estimates for a specific project." Treat it as a starting point for reading your quotes, not as a quote. The savings figures, by contrast, are ENERGY STAR's own.

Sources: DOE/NREL National Residential Efficiency Measures Database · EPA ENERGY STAR, average annual savings by climate zone · BLS PPI, inputs to construction industries (deflator)

How this estimate is calculated

  • Cost per window is DOE's median retail price for that frame material, plus DOE's modelled install labour of roughly 2.8 hours. It carries 2023 dollars forward using the construction-inputs price index, which has been close to flat since then.
  • The energy saving is ENERGY STAR's modelled figure for replacing every window in a 2,376 sq ft house. We scale it down if you are replacing only some of yours, because saving does not arrive for windows you did not touch.
  • Payback ignores rising energy prices, which would shorten it, and ignores financing costs, which would lengthen it. It also ignores comfort, noise and resale, which are usually the real reasons people replace windows.
  • No free source publishes an installed window price. This number is our model, not a published statistic, and we would rather say so than pretend otherwise.

Frequently asked questions

How much does window replacement cost?
On DOE's product-level pricing, a vinyl replacement window runs around $812 installed, so a typical 15-window house lands near $12,180. Wood and aluminium cost more. Real quotes vary widely by region and contractor, so use the calculator with your own window count and treat it as a starting point, not a quote.
Do replacement windows pay for themselves?
Almost never on energy savings alone. ENERGY STAR's own figures put the saving from a whole-home replacement at a few hundred dollars a year. Against a five-figure job, that is a payback of roughly two decades, which is longer than the windows are likely to last. Anyone telling you the windows pay for themselves is selling windows.
Is it worth replacing double-pane windows?
For energy, rarely. ENERGY STAR's saving for replacing double-pane clear glass is roughly half what you get from replacing single-pane, so the payback roughly doubles. If your double-panes are fogged, rotten or failing, replace them for that reason instead.
What is cheaper than replacing windows?
Low-e storm windows fitted over your existing single-pane glass. The EPA puts their saving in the same ballpark as full replacement, at a fraction of the cost. Air-sealing and weatherstripping are cheaper still. If the energy bill is genuinely the problem, start there.

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