| Repair Type | Cost per Window | Lifespan | Energy Efficiency Restored? | | :--- | :--- | :--- | :--- | | Defogging service | $60–$100 | 1–3 years | No (low) | | DIY IGU replacement | $50–$150 (glass only) | 5–15 years | Yes (if sealed correctly) | | Pro IGU replacement | $150–$400 | 10–20 years | Yes | | Full window replacement | $500–$1,200+ | 20–30 years | Yes (plus new frame) |
Check your original window warranty. Many high-quality windows have 20-year seal warranties that transfer with the home. You might get free glass replacement! double pane glass window repair
But when they fail, they don’t fail like a single sheet of glass. If you see fog, condensation between the panes, or a hazy film, Here’s what you need to know about repairing them. | Repair Type | Cost per Window |
Have you tried defogging or replaced an IGU yourself? Share your experience in the comments. You might get free glass replacement