Why Frost Forms on Your Patio Door and How to Fix It
Frost forms when warm, moist air inside your home comes into contact with a cold surface, like the glass of a patio door
Frost forms when warm, moist air inside your home comes into contact with a cold surface, like the glass of a patio door
The primary cause of water or ice on windows is condensation. Condensation occurs when warm, humid air inside the house meets the cold surface of a window.