Low E glass stands for Low Emissivity glass. Basically it works by rejecting the sun’s heat and damaging solar rays in the summer and in the winter it reflects the heat in your home back inside. This reflection of heat keeps your home cooler in the summer and warmer in the winter.
Low E glass also reduces the solar rays coming in through your window. This will help to reduce fading and discoloration of furniture, curtains, and flooring materials. Because of the insulating properties of Low E glass, it is recommended that all windows in your home be replaced with Low E glass.