This is the most common "repair" method. Companies drill tiny holes in the glass, spray cleaning solutions inside to remove deposits, and install vents to allow the moisture to escape and prevent future buildup.
If you just want to see out of your window again, repair (defogging) works. If you want the window to keep your house warm again, repair (glass replacement) is the answer. If the whole system is failing, replace. can a double pane window be repaired
Repairing a double-pane window is often 50–70% cheaper than a full window replacement because you can keep the existing frame and only swap out the glass. Common Issues and Repair Options This is the most common "repair" method