U.S. Department of Energy Energy Efficiency & Renewable Energy U.S. Department of Energy Energy Efficiency & Renewable Energy

Efficient Windows Collaborative

This site provides unbiased information on the benefits of energy-efficient windows, descriptions of how they work, and recommendations for their selection and use. The Efficient Windows Collaborative (EWC) is a nonprofit, 501(c)3 organization that partners with window, door, skylight, and component manufacturers, research organizations, federal, state and local government agencies, and others interested in expanding the market for high-efficiency fenestration products. EWC's members have made a commitment to manufacture and promote energy-efficient windows.

Permission Date: 
Friday, July 1, 2016
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