Repair or Replace Your Windows? A Six-Question Flowchart

Most windows that homeowners are told to replace can be repaired. These six questions help you decide — honestly.

Work down the list. If you answer "yes" to most, repair is almost certainly the smarter choice. If you land on several "no" answers, replacement may make sense for that window — and it's worth getting a free second opinion before signing anything.

When Replacement Really Is the Right Call

We repair windows for a living, and we still tell people to replace them when it makes sense. Replacement is usually the better choice when:

• The frame has rotted through its structure — not just at the sill or a corner.
• Most windows in the house have several failures at once, and repair quotes approach half the cost of replacement.
• You need a bigger opening — for example, to meet bedroom egress requirements. That's a structural change, not a repair.
• You're remodeling and want a different size, style or material.
• You want the highest possible energy performance and don't want to add storm windows to single-pane glass.

If your windows fall into one of these, we'll say so. Preparing to sell? See the window problems home inspectors flag.

What About Energy Savings?

Replacement windows are often sold on energy savings. New double- or triple-pane windows do insulate better than failed or single-pane units. But windows are only one part of a home's heat loss — air leaks and insulation elsewhere often matter as much or more — so the savings from replacing windows alone usually take many years to repay the cost.

Repairing the real problem — a failed glass unit, worn weatherstripping, a sash that doesn't close tight — captures much of the comfort improvement for a fraction of the price. On single-pane windows, a good storm window closes much of the remaining gap.