Some companies drill tiny holes to vent moisture and spray a cleaning solution inside, though this doesn't restore the insulating gas (like argon).
If the window is hard to open, replace the hinges or handles rather than the glass. Costs and Considerations fixing double pane windows
Technicians drill tiny holes (3-6 mm) into the glass. Some companies drill tiny holes to vent moisture
The bad news first: You cannot "repair" the fog. That milky film between the panes is condensation from humid air that has infiltrated the failed seal. No amount of DIY drilling, chemical drying agents, or defogging kits will restore the window’s original insulating power. At best, they offer a temporary cosmetic fix; at worst, they can crack the glass. The bad news first: You cannot "repair" the fog
Fogging occurs when the desiccant inside the spacer becomes saturated and the seal breaks.
Roughly 10% to 50% of the cost of a full window replacement. Note that while this restores clarity, it does not always restore the full original R-value (insulation). 2. Replacing the IGU (The Best DIY Fix)