Low-E Windows: Low-E means low emissivity, which refers to a surface that emits low levels of radiant heat. Windows treated with a low-E coating reduces the amount of heat transfer, thus keeping a home cooler when sunlight comes through the windows.
Low-E Windows: Low-E means low emissivity, which refers to a surface that emits low levels of radiant heat. Windows treated with a low-E coating reduces the amount of heat transfer, thus keeping a home cooler when sunlight comes through the windows.