Cleaning experts Kärcher have shared six methods to prevent window condensation, including unusual hacks such as placing cat litter in a sock or a bowl of salt on the windowsill. Condensation occurs when indoor air is warmer than the window surface, and it builds up faster in winter due to heating and daily activities like cooking and showering.
While condensation itself is harmless, it can lead to damp patches on wood or plaster, causing damage and health issues such as respiratory problems, according to the NHS. Experts recommend soaking up moisture before it settles, using dehumidifiers or window vacuums like Kärcher's own product.
Ventilating the home by opening windows for 20 minutes a day can drastically reduce condensation. Keeping windows shut during moisture-producing activities like cooking or drying clothes exacerbates the problem. Re-insulating walls and maintaining a consistent warm temperature also help prevent condensation.
Indoor plants release moisture, so moving them away from windows in winter is advised. Furniture near external walls should be moved to allow air circulation. The experts note that dehumidifiers cost around 16p per hour to run and can be left on overnight.
