Welcome to the Efficient Windows Collaborative







YOUR GATEWAY TO INFORMATION ON HOW TO CHOOSE ENERGY-EFFICIENT RESIDENTIAL WINDOWS



This site provides unbiased youtube.com/watch?v=Pi1QqcSzUIk 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.