When to Replace vs. Repair Your Windows

Drafty, foggy, or hard-to-open windows are more than an annoyance — they cost you money every month in energy bills. But does that mean you need full replacement, or can a repair do the job?

Signs a Repair Might Be Enough

If the frame is solid and the glass isn't fogged between panes, you may only need new weatherstripping, hardware, or a fresh caulk seal. Minor drafts around the edges often come from worn seals, not the window itself.

Signs You Need Replacement

Fog between double-pane glass means the seal has failed — that can't be repaired. Rotting frames, visible warping, or windows that won't stay open are also replacement signals. Single-pane windows in older homes almost always benefit from upgrading to double-pane.

Energy Efficiency Matters

Modern low-E glass and argon-filled windows dramatically reduce heat transfer. In Illinois winters, the energy savings from new windows can be significant — but only if they're installed correctly with proper flashing and insulation.

Why Installation Quality Matters Most

Even the best window leaks air and water if it's not installed right. Proper shimming, flashing, insulation around the frame, and a weathertight seal are what separate a good window job from a bad one.