The Solar Heat Gain Coefficient (SHGC) and U-Factor(U-Value) are two important metrics used to assess the performance of windows in terms of energy efficiency. Let’s look at each of them: Solar Heat Gain Coefficient (SHGC) The SHGC is the fraction of solar radiation that enters a window and is released into the home as heat. … Continue reading SHGC and U-Value of Windows and Doors for Optimal Energy Efficiency