Repair or Replace Your Windows? (2026)
By the HomeCostLens editorial team · Reviewed July 2026
The repair-vs-replace decision for your windows comes down to three things: its age, how widespread the problem is, and the cost of repair relative to replacement. As a rule of thumb, repair an isolated issue on equipment with years of life left; replace when it is near end-of-life or when repairs approach a third to half of replacement cost.
Quick decision guide
| Situation | Best move |
|---|
| A single foggy or cracked pane on otherwise sound windows | Repair (glass/IGU) |
| A few failed seals or broken hardware, frames in good shape | Repair |
| Most windows old, single-pane, drafty, or with rotted frames | Replace |
| Repair approaches half the cost of a new window, or you want lower energy bills | Replace |
Cost comparison
| Option | Typical national cost | Best for |
|---|
| Window Repair | ~$450/window | A foggy pane, failed seal, or hardware on otherwise sound windows |
| Window Replacement | ~$9,500 | Old, drafty, single-pane, or rotted windows (whole home) |
Frequently asked questions
- Should I repair or replace my windows?
- Repair a single foggy pane, failed seal, or broken hardware when the frames are sound and the windows aren't old. Replace when most windows are old, single-pane, drafty, or have rotted frames — or when repairs approach half the cost of new units and energy savings justify the upgrade.
- How long do windows last?
- Quality vinyl and fiberglass windows last about 20–30 years; wood can last longer with maintenance. A failed seal (foggy glass) can sometimes be fixed by replacing just the insulated glass unit rather than the whole window.