How to Choose Energy-Efficient Windows
Energy-efficient windows keep conditioned air from escaping or absorbing the sun’s heat. Look for a window’s U factor, Solar Heat Gain Coefficient (SHGC), Visible Light Transmittance (VT) and Air Leakage to assess its performance. Double-paned windows are often filled with argon or krypton gas, which acts as an insulator. Low-emissivity glass reflects heat back to […]
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