Window condensation is a simple phenomenon that occurs under the right conditions of humidity and temperature.

When an object is cooler than the air around it, the water molecules in the air come together and “stick” to the surface, forming a thin layer of water droplets. It happens on your glass of cold lemonade during hot weather and on the windows of your car and even the windows of your home during colder weather.

How to Reduce Window Condensation

The presence of condensation on the inside of house windows can generally be eliminated with one or more of the following measures:

  • Use moisture eliminators: To reduce the amount of moisture that travels through your interior air, place desiccant bags next to your windows and mirrors. If placed in your drawers and closet, desiccants can also protect your clothing from moisture.
  • Buy a dehumidifier: If condensation has been especially thick and common during winter months, consider investing in a dehumidifier. Most units sell for about the same price as an air conditioner but can be just as essential to the comfort of your living quarters.
  • Turn off your humidifier: If humidifiers are a feature of your living environment, consider deactivating them on cold days when your windows are condensation-prone. The mist released into the air can fog up your windows on cold days.
  • Use your fans: Each time you cook or take hot baths or showers, turn on the corresponding fans for such activities. The fan in your bathroom can help minimize condensation on the mirror and prevent the spread of steam, thus eliminating fog buildup on your windows. Also keep the bathroom door closed whenever you shower.
  • Circulate your rooms: Warm air travels upward within an enclosed space. Run your ceiling fans clockwise during the colder months to circulate the warmer air downward.
  • Crack the door: If the outside temperatures are not too cold, crack your front or back door for a few minutes to release steamy indoor air.
  • Turn up the heat: If the air within your living areas is raised to spring temperatures, you could reduce the possibility of condensation on your inner panes, especially if the heat source is located near your windows.