Window replacement is a significant investment -- but aging windows can cost you hundreds annually in heating and cooling. Understanding how windows are priced helps you evaluate quotes and avoid overpaying.
Cost per window by type
Single-hung windows: $300-$600 installed. Double-hung: $400-$800. Casement: $500-$900. Bay or bow windows: $1,200-$3,500. Sliding: $350-$700. These prices include a standard double-pane replacement window and professional installation.
Frame material matters
Vinyl frames are the most common and cost-effective ($300-$700/window). Fiberglass runs $500-$1,200 but outperforms vinyl in extreme temperatures. Wood frames cost $800-$2,000+ and require more maintenance. Most homes replacing older aluminum windows move to vinyl.
Full-house replacement cost
A 2,000 sq ft home typically has 15-20 windows. At mid-range vinyl pricing ($450/window), a full replacement runs $6,750-$9,000. High-end fiberglass or specialty shapes push totals above $15,000. Most window companies offer financing.
Energy savings and ROI
Replacing single-pane windows with double-pane low-E glass typically saves $125-$465/year on energy costs depending on climate. Federal tax credits cover 30% of window replacement costs (up to $600/year) for Energy Star certified products through 2032.
Signs you need replacement vs. repair
Repair if: one pane is cracked, hardware is failing, minor air leaks around the frame. Replace if: foggy glass between panes (failed seal), rotting wood frames, windows painted shut, or windows over 20 years old in a climate with temperature extremes.
Bottom line
Budget $400-$800 per window for a standard vinyl double-pane replacement. Get at least three quotes -- window pricing varies significantly between contractors.
Need windows & doors work done?
Novum sends its own licensed crew. Flat upfront quote before we touch anything.