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Why Double-Pane Windows Suffer Discoloration

Heat gain and heat loss through windows account for 25%–30% of residential heating and cooling energy use, according to the Department of Energy. That’s why most homeowners prefer double-pane windows. Compared to a single-pane window, double-pane windows are more energy-efficient and can help lower electricity costs. However, because double-pane windows are designed differently than conventional single-pane..