Modern low-E exterior storm windows blend in with the original window and provide year-round increased comfort and energy efficiency (Source: Courtesy of Larson).įor these reasons, the U.S. Low-E storm windows cost about the same as standard storm windows but are about 50% more energy efficient than traditional uncoated storm windows ( Cort 2013).įigure 1. Tight-fitting modern storm windows also provide energy savings by helping to reduce the overall air leakage of the window. Coatings can also reduce the amount of solar heat gain, reducing cooling loads in summer. ![]() Low-E glass has a durable transparent silver coating that reduces energy loss through the window by reflecting the radiant heat back into the home. ![]() Traditionally, storm windows have been single glazed with clear glass, but in recent years, many models have become available with low-emissivity (low-E) coatings, which significantly improve the thermal performance of the window. ![]() They come in both operable and fixed versions. Unlike our grandmother’s old storm windows that had to be removed, stored, and replaced seasonally, modern storm windows are designed to be permanently installed and remain in place year-round. ![]() Modern storm windows include new energy-efficient technology and sleek design features that provide an easy-to-install, cost-effective method for upgrading the energy efficiency of existing windows, while offering additional benefits such as improved thermal comfort and better sound control (Figure 1).
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