ENERGY STAR® Windows

ENERGY STAR® LogoThe Department of Energy (DOE) and the Environmental Protection Agency (EPA) have created an ENERGY STAR® designation for products that meet specific energy performance criteria. If a window has the ENERGY STAR designation, it will be labeled to show the zones in which it is qualified. Climate zones have different recommended energy-efficient performance levels for windows, doors, and skylights. You can use the NFRC label or the NFRC Certified Products Directory to compare ENERGY STAR products.

Climate Zones

ES v7_North

ES v7_North_Central

ES v7_South_Central

ES v7_South

ES_ME_2023Windows for residential buildings are eligible for ENERGY STAR Most Efficient recognition in 2023.

View the criteria for windows for the ENERGY STAR Most Efficient Program.

ENERGY STAR in Canada
Information and data on this website follow the U.S. ENERGY STAR criteria. Canada is an international partner in the ENERGY STAR program. The criteria for fenestration in Canada are different than in the United States. For information on products in Canada, see Natural Resourses Canada.

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About Us

provides unbiased information and education to the public on the energy efficiency, technical, and human considerations that influence window selection and use. The EWC collaborates with allied organizations, educational institutions, and government agencies that promote energy efficiency in residential windows. We do not sell, service, install, or recommend products, or endorse manufacturers. Descriptions and specifications of the products in the Window Selection Tool are provided by the manufacturer. The EWC is not liable for any manufacturing defects or inaccurate product descriptions and specifications and does not guarantee the performance of NFRC-certified windows, doors, and skylights.

Contact Us ewc@nfrc.org
National Fenestration Rating Council
6305 Ivy Lane, Suite 410
Greenbelt, MD 20770
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Learn more about us at : www.nfrc.org