Window Replacement Options

Whether you would like to explore window replacement options to improve the energy performance of your existing windows or replace them with new energy-efficient windows, several options are available. An energy audit can help you identify promising strategies for more efficient windows and a more efficient house. Whichever energy efficiency measures you consider, the federal government, as well as state, local, and utility programs, may offer financing help or weatherization assistance.

While most new windows have labels indicating their energy properties, such information is not often available for existing windows.

Repair Existing Windows

Assess if your existing windows are in a reasonable condition. The cost to repair or rehab will vary depending on the condition of the windows.

Retrofit Existing Windows

If your existing windows are in a reasonable condition and you would like to hold on to them, there are several options for improving their energy performance.

Existing Windows

Decide if a full window replacement or a window insert is preferred.

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.

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National Fenestration Rating Council
6305 Ivy Lane, Suite 410
Greenbelt, MD 20770
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