In the summertime, the sun shining through your windows heats up the room. Windows with low-e coatings on the glass reflect some of the sunlight, keeping your rooms cooler.
Install white window shades, drapes, or blinds to reflect heat away from the house.
Close curtains on south- and west- facing windows during the day.
Install awnings on south- and west- facing windows.
Apply sun-control or other reflective films on south-facing windows to reduce solar heat gain.
