Solar Heat Gain Coefficient

What is the Solar Heat Gain Coefficient?

As most homeowners know, direct exposure to the sun can cause an interior space to warm dramatically. The Solar Heat Gain Coefficient is the measure of how much of the sun’s heat a window allows to pass through, resulting in an increase in room temperatures. The lower the Solar Heat Gain Coefficient the more heat a window is able to block. Depending on where a home is located, a homeowner may desire windows with either a higher or lower Solar Heat Gain Coefficient.