To stop condensation on windows, improve ventilation in the room by using exhaust fans or opening windows periodically. Use a dehumidifier to reduce indoor humidity levels. Apply anti-condensation window film or ensure proper insulation around the window to minimize temperature differences. Regular cleaning of the window also helps reduce moisture buildup.

Preventing condensation involves improving ventilation, using a dehumidifier, and applying anti-condensation film. Proper insulation and regular cleaning also help manage moisture levels and prevent buildup.