Save Money. Protect Earth.

Energy Star LogoENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy, helping consumers save money and protect the environment through energy-efficient products and practices. 

Window configurations (frame, sash and glazing assembly) must meet a specific government U-Factor  determined by regional climate conditions. Much like the more familiar R-Factor for walls, roofs and insulation, a U-Factor is used to express the insulation value of a window, however, conversely to R-Factors, the lower the U-Factor, the better the insulation value. Be sure to check the ENERGY STAR® requirements in your specific climate area.
 

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