Are fogged windows a problem?
Besides ruining the view of your window, fogged panes also signal that the insulation value of your window has been compromised. The effectiveness of double-paned windows comes from the pocket of air in between the two pieces of glass. Air or gasses like argon have a higher insulating value than glass alone. Heat cannot pass through it as easily. However, once the seal is broken on a window, the argon or air inside escapes. The insulating value of your double-pane decreases, and your energy bills go up. Also, if you have one window that is fogged, any other windows of the same brand or that were installed at the same time are at risk. Seal failure is a result of poor installation or design. If one window fogged up, the rest probably will too.
