Window Replacement Cost Calculator: 2026 Price per Window
Replacement windows cost $450-$1,500 per window installed in 2026, with whole-house projects averaging $8,000-$22,000. This guide gives you the real 2026 price per window by material — vinyl, fiberglass, wood-clad — plus what full-frame replacement really adds.
Window replacement is a top-5 exterior ROI project every year — and 2026 pricing has firmed up as vinyl prices stabilized and fiberglass frames dropped 6-8% from 2025 peaks.
2026 Cost per Window (Installed)
- Vinyl double-hung: $450-$850 installed
- Vinyl slider: $400-$800
- Vinyl casement: $600-$1,050
- Fiberglass: $850-$1,400
- Wood-clad (Andersen 400, Pella Lifestyle): $1,100-$1,900
- Bay / bow window: $2,200-$4,500
Insert vs. Full-Frame Replacement
Insert (retrofit) replacement drops a new window into the existing frame — cheapest and fastest at $150-$275 labor per window. Full-frame replacement tears out to the studs and is required when sills are rotted or the frame is out of square. Budget an extra $200-$400 per window for full-frame.
The Formula
Total = (Unit price + Install labor + Full-frame add-on) × Number of windows × Regional cost index
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