Quick answer: Replacing a window costs about $517 on average in 2026, and a typical project of about seven windows costs $7,183, according to This Old House. Vinyl averages $472 per window and fiberglass $564; premium brands can reach $1,600–$2,200 per window.
Cost by Frame Material
| Material | 2026 average | Budget to premium range |
|---|---|---|
| Aluminum | $453 | — |
| Vinyl | $472 | $400–$1,600 |
| Composite | $513 | $500–$1,800 |
| Wood | $544 | $650–$2,200+ |
| Fiberglass | $564 | $400–$2,200 |
Averages from This Old House’s survey of 1,000 homeowners; ranges combine Inch Calculator’s budget prices with Pella’s premium installed prices.
Cost by Window Style
| Style | Average per window |
|---|---|
| Single-hung | $474 |
| Casement | $529 |
| Sliding | $531 |
| Picture | $540 |
| Awning | $545 |
| Bay | $550 |
| Double-hung | $551 |
Cost by Glass
| Glass | Average per window |
|---|---|
| Single-pane | $400 |
| Double-pane | $529 |
| Triple-pane | $609 |
Skip the math: enter the number of windows and frame material for a whole-house estimate. Open the free Window Replacement Cost Calculator →
Whole-House Examples
| Windows | Vinyl at $472 | Fiberglass at $564 |
|---|---|---|
| 5 | $2,360 | $2,820 |
| 10 | $4,720 | $5,640 |
| 15 | $7,080 | $8,460 |
| 20 | $9,440 | $11,280 |
Labor and Installation Type
Installation labor alone usually runs about $150–$300 per window. Insert (pocket) replacements fit inside the existing frame and cost less; full-frame replacements remove the old frame and trim and are needed when frames are rotted.
Ways to Save
- Replace windows in batches rather than one at a time.
- Stick to standard sizes.
- Choose vinyl for the best value; fiberglass for durability.
- Look for ENERGY STAR certified windows and local utility rebates.
Re-siding at the same time? Try the siding calculator.
Signs It’s Time to Replace Your Windows
- Drafts you can feel near closed windows.
- Fog or condensation between the panes, which means a failed seal.
- Rotting or soft wood frames.
- Windows that stick, will not stay open or will not lock.
- High heating and cooling bills compared with similar homes.
Energy Features Worth Paying For
- Low-E coatings: reflect heat back into the room in winter and out in summer.
- Argon or krypton gas fill: improves insulation between panes.
- Warm-edge spacers: reduce condensation at the glass edge.
- ENERGY STAR certification: look for the version rated for your climate zone.
Insert vs Full-Frame Replacement
| Insert (pocket) | Full-frame | |
|---|---|---|
| What is replaced | Sash and new frame inside old frame | Entire window down to the rough opening |
| Cost | Lower | Higher |
| Glass area | Slightly smaller | Same or larger |
| Best when | Old frames are square and sound | Frames are rotted or you want a new size |
How Long Does Installation Take?
An experienced crew usually installs 8–15 insert windows in a day. Full-frame replacements with new trim take longer. Ask whether interior and exterior trim, painting and disposal are included in the quote.
Sources
- This Old House: Window replacement cost
- Inch Calculator: Window replacement cost guide
- Pella: Replacement window cost by material
Frequently Asked Questions
How much does it cost to replace 10 windows?
About $4,700–$5,600 at 2026 average prices, or up to $16,000–$22,000 with premium brands.
What is the cheapest window replacement?
Vinyl single-hung or sliding windows installed as inserts are usually the least expensive.
Are triple-pane windows worth it?
In cold climates they improve comfort and efficiency, but they cost more; double-pane low-E glass is enough for most homes.
How long do replacement windows last?
Vinyl and fiberglass windows commonly last 20–40 years with basic care.
Do new windows lower energy bills?
Yes, especially when replacing single-pane or leaky windows, though savings vary by climate and the condition of the old windows.
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Try the free Window Replacement Cost Calculator or browse all home improvement calculators.