Block Noise

Efficient windows are prized primarily for their energy efficiency and enhanced control over comfort, moisture, and natural light. Those same qualities also provide better soundproofing. No window provides a complete barrier from sound, but efficient ones eliminate more unwanted street noise. 

Windows accomplish this in several ways, using the same technologies that deliver other benefits. Windows with multiple panes of glass block more sound in particular if the space between them is filled with an insulating gas such as krypton or argon, for example. Using thicker panes with larger the gaps between them can also help.  

NFRC does not rate windows for their ability to do this, but its window ratings still provide an accurate measure of soundproofing via its Air Leakage rating, because sound and air pass through the same leaks in a window.  

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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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