Gain More Energy Efficiency from New Windows and Doors

Windows are not all the same. In fact, if you live in an older home, you likely have inefficient windows. The frame material, glazing, and spacers all impact the window’s U-factor, which is the transmission rate of non-solar heat. For some windows, the U-factor only refers to the efficiency of the glass, but the NFRC U-rating measures the entire window’s efficiency. Lower factors mean that you have more energy efficient windows.