To keep condensation from happening, the inside humidity level must be reduced enough to lower the Dew Point temperature, so it’s below the temperature of surfaces that are condensating.

Changing to a triple pane glass package could help, but the window’s vinyl surfaces will still remain at 30 degrees and have condensation. Another reason why the 30 degree rule applies well. This applies similarly to entry doors, but the 30-degree rule may not always be the same. Door slabs can measure around the 30-degree difference outside to inside, but hardware could be less. Condensation on inside surfaces of the home is controlled by the homeowner. Remember, windows and entry doors are not capable of making water. Also, it’s best to use a digital meter when measuring inside temperature and humidity levels along with using a temperature laser to measure condensating surface temperatures.