Window Replacement Cost Calculator
Calculate total window replacement costs by style, frame, and glass package. See your annual energy savings, federal tax credit, and payback period.
What you'll need
- Window style (double-hung, casement, bay, bow, egress, skylight, etc.)
- Frame material (vinyl, aluminum, wood, wood-clad, or fiberglass)
- Glass package (double-pane, Low-E coating, Low-E + argon, or triple-pane)
- Number of windows and current window type (to calculate energy savings)
What you'll get
Total installed cost range
Windows + labor + add-ons
Per-window cost
Installed, by style and material
Energy savings estimate
Annual savings vs. current windows
Federal tax credit
30%, up to $600 (if ENERGY STAR)
Window cost overview
How It Works
Count your windows
Enter the number of windows by type: single-hung, double-hung, casement, or picture.
Select frame material
Choose vinyl, fiberglass, wood-clad, or aluminum — each has different cost and efficiency.
See payback and credits
Get energy savings estimate and federal tax credit (up to $600 per window, max $1,200/yr).
Window Replacement Cost by Type
| Window Type | Material | Cost Installed |
|---|---|---|
| Single-hung | Vinyl | $300–$600 |
| Double-hung | Vinyl | $400–$800 |
| Casement | Vinyl | $500–$1,000 |
| Double-hung | Fiberglass | $600–$1,200 |
| Bay / Bow | Wood-clad | $1,500–$4,000 |
Energy Star windows qualify for a 30% federal tax credit up to $600 per window ($1,200/yr max).
Frequently asked questions
How much does window replacement cost?
Window replacement costs $300–$900 per window installed for standard double-hung windows. Specialty windows (bay, bow, egress) run $800–$4,000+. A whole-house replacement for a typical home with 10–15 windows costs $5,000–$15,000 total. Vinyl frames are most affordable; fiberglass and wood frames cost more.
How often should windows be replaced?
Windows typically last 15–30 years depending on material. Vinyl windows: 20–40 years. Wood windows: 30+ years with maintenance. Aluminum: 20–25 years. Replace when you see condensation between panes, drafts, difficulty opening/closing, or visible rot/warping.
Is double-pane or triple-pane glass worth it?
Double-pane with Low-E coating and argon gas is the sweet spot for most climates. Triple-pane adds R-1 to R-2 more and costs 15–30% more — worth it in extreme cold climates (Minnesota, Montana) or passive house builds. For most homeowners, double-pane Low-E + argon is the best value.
What tax credits are available for window replacement?
The federal Energy Efficient Home Improvement Credit (25C) offers a 30% tax credit on qualifying exterior windows and skylights, up to $600 per year as of 2026. Windows must meet ENERGY STAR Most Efficient criteria. Some states offer additional rebates through utility programs.
How much can new windows reduce my energy bill?
Replacing single-pane windows with ENERGY STAR double-pane windows can reduce heating and cooling costs by 12–24% annually. The average homeowner saves $100–$400 per year depending on climate, home size, and number of windows.
What is the best window frame material?
Vinyl is the most popular — low cost, excellent insulation, no painting required, 20–40 year lifespan. Fiberglass is the premium choice — strongest, most energy-efficient, expands/contracts minimally. Wood is traditional and beautiful but requires maintenance. Aluminum is durable but conducts heat.
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Calculate My Window Cost →