Composite windows are a popular choice because of their wood-like strength with low maintenance. Here’s what they cost, how long they last, and how they compare.
Cost at a glance
| Cost | Source | |
|---|---|---|
| National average (installed) | $513 | This Old House, window replacement cost survey (2026) |
| Typical range, standard sizes | $400-$1,500 | TheWindowCo estimate from published averages |
| Andersen 100 Series (Fibrex composite) | $400-$1,500 | Fixr.com cost guides |
| Typical lifespan | 30+ years | TheWindowCo estimate from published averages |
What affects the price
- Pros: Wood-like strength with low maintenance.
- Cons: Brand-specific products; price varies a lot by line.
- Size and style matter as much as material: a large casement in vinyl can cost more than a small double-hung in fiberglass.
- Glass package: low-E coatings and argon gas are standard on most mid-range lines; triple-pane costs extra.
Ways to save
- Compare the same style and size across two materials before deciding.
- Ask whether the quote is for an insert or full-frame installation.
- Look for ENERGY STAR certification for your climate zone if you want utility rebates.
Get an accurate price
Online averages are a starting point. Window prices depend on exact sizes, your home’s condition and local labor rates, so the only reliable number is an itemized, in-home quote. Compare at least three, and use our window cost calculator to sanity-check them.
Frequently asked questions
How long do composite windows last?
Typically 30+ years, depending on climate, installation quality and maintenance.
Are composite windows worth the cost?
Compare total cost over the years you’ll stay in the home: cheaper frames that need replacing sooner can cost more in the long run.
What readers paid
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Questions from readers
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