This is the industry secret contractors hate. There are specialized companies that can drill tiny holes in the glass, inject a cleaning solution to remove the fog residue, and install vents to equalize pressure.
Companies offer a service where they drill a tiny hole in the glass, spray a cleaning solution, vacuum out the moisture, and insert a one-way valve. broken window seal exclusive
Once an IGU seal has failed, the options for repair are limited. The industry offers two primary paths: defogging (ventilation) and replacement. This is the industry secret contractors hate
Unless the sash is physically rotted or the vinyl is warped, do not replace the entire window. The broken window seal exclusive problem is in the glass, not the frame. Many replacement companies scare you into full-frame replacement because it yields a higher commission ($1,200 per window vs. $400). Get a second opinion. Once an IGU seal has failed, the options
Before you spend a dime, check the paperwork. Most IGUs come with a 10 to 20-year warranty on seal failure.