- 1). Run a dehumidifier. By drying the air near the inside surface of the window, you can get moisture out of the double-pane windows. A good rule of thumb is to keep the relative humidity between 30 and 50 percent. This will help prevent many of the problems associated with moisture in the air, including window condensation, mold and mildew.
- 2). Circulate the air. Air movement helps remove moisture from the air. If it is warm enough, open the windows in your home and run a standstill fan or exhaust fan. This is particularly important after cooking, laundering and bathing, which add approximately 2 gallons of water/moisture a day to the average house.
- 3). Hang packages of chemicals that absorb moisture. These include silica gel, activated alumina, anhydrous calcium sulfate and molecular sieves. While effective in removing moisture from your double pane windows, these chemicals can be difficult to find. Try contacting your local high school or university's chemistry teachers. These individuals may be able to point you in the direction of a local supplier of industrial chemicals.
- 4). Remove and replace the double-pane windows. As double-pane windows age, moisture can breach the seal and condense between the layers of glass. When looking for a replacement glass, choose one with a high Condensation Resistance (CR) rating. CR ratings, developed by The National Fenestration Rating Council, range from 0 to 100, with the higher numbers indicating better condensation resistance.
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