Window replacement is a significant home improvement project that affects comfort, energy bills, and curb appeal. Costs vary widely depending on window type, frame material, and installation complexity. Here's what to expect.
Average Window Replacement Cost
The average cost to replace a single window ranges from $300 to $1,200 installed. Full-house replacements for a typical home (15–20 windows) run $4,500 to $18,000 or more.
| Window Type | Average Cost (installed) |
|---|---|
| Single-hung | $300–$600 |
| Double-hung | $450–$800 |
| Casement | $500–$1,000 |
| Sliding | $400–$800 |
| Bay/Bow | $1,000–$3,500 |
| Skylight | $800–$2,500 |
| Picture window | $400–$900 |
Frame Material Comparison
| Material | Cost Factor | Maintenance | Lifespan |
|---|---|---|---|
| Vinyl | Low | Very low | 20–40 years |
| Wood | High | High | 30+ years |
| Aluminum | Medium | Low | 20–30 years |
| Fiberglass | High | Very low | 40+ years |
| Composite | Medium-High | Low | 30+ years |
What Affects Installation Cost
- Window size — Larger windows cost more in both materials and labor
- Number of panes — Double-pane is standard; triple-pane adds 15–30% to cost
- Installation type — Insert replacements are cheaper; full-frame replacements cost more but last longer
- Second-story windows — Add $50–$100 per window for scaffolding or ladder work
- Permit requirements — Some areas require permits for full-frame replacements
Estimate Your Window Replacement Cost
Enter the number and type of windows to get an instant cost estimate.
Estimate Window Cost →When to Replace vs Repair
Repair if: condensation is between panes (seal failure — just the glass needs replacing), the frame is solid and the problem is minor hardware or weatherstripping.
Replace if: the frame is rotted, warped, or cracked; the window is single-pane; or energy bills are noticeably high due to drafty windows.