Key takeaways
- Condensation is moisture in the air meeting cold glass
- Lower indoor humidity first
- Better glass and spacers raise the glass temperature
Why it happens
When warm, humid indoor air touches a cold window surface, the moisture condenses. It happens most on cold mornings, in bathrooms and kitchens and in tightly sealed homes.
A little is normal, but heavy, constant condensation can damage frames.
What helps
Run bath and kitchen fans, use a dehumidifier in damp spaces and keep air moving. Open blinds so warmer room air reaches the glass.
Check that dryer vents and gas appliances are venting properly outside.
Better windows
Warm-edge spacers, low-E coatings and extra panes keep the inside glass warmer, so condensation forms less. If you have a lot of it, replacement windows can help, along with managing humidity.
Related services
Quick answers
Is condensation between panes the same problem?
No. That is a failed seal, and the unit needs replacing.
What indoor humidity is best in winter?
Many people aim for roughly 30 to 40 percent, lower in very cold weather.
Ready to talk it through? Get a free estimate or call 800-224-9245.