National Fenestration Rating Council

National Fenestration Rating Council North America's largest independent, non-profit, third-party rating and labeling system for the energy performance of windows, doors, and skylights.

Celebrating 35 years of fair, accurate and credible ratings.

06/09/2026

Reminder! The following document is open for public review and comment through June 29: NFRC 100-2026[E0A0]: Procedure for Determining Fenestration Product U-factors

GREENBELT, MD (May 21, 2026) — The National Fenestration Rating Council (NFRC) Board of Directors has approved an NFRC document, now open for public review in accordance with the American National Standards Institute’s (ANSI) process. The public review and comment period run from...

07/08/2025

The National Fenestration Rating Council's Deb Callahan points to the OceanGate disaster of 2023 as an example of why the fenestration industry stands on certification.
https://tinyurl.com/3xshxcst

05/08/2025

For over 30 years, the Energy Star program has stood as a cornerstone of America's commitment to energy efficiency. In the fenestration industry, Energy Star …

“We need to consider how we mentor the next generation of professionals before our seasoned experts leave us.”
11/04/2024

“We need to consider how we mentor the next generation of professionals before our seasoned experts leave us.”

Deb Callahan discusses longevity, recent and looming retirements, and what it all means for the future of both the National Fenestration Rating Council and the industry.
https://tinyurl.com/yy6xsjs4

It's ENERGY STAR day! Since 1998, NFRC and ENERGY STAR have helped consumers choose energy-efficient certified windows, ...
10/09/2024

It's ENERGY STAR day! Since 1998, NFRC and ENERGY STAR have helped consumers choose energy-efficient certified windows, doors and skylights!

08/06/2024

The National Fenestration Rating Council (NFRC) has updated its certification mark, due to “ongoing NFRC P*P accreditation efforts” that have necessitated the changes.
https://tinyurl.com/2amsf57t

Ever wonder how a window becomes ENERGY STAR certified and what that means? It all starts at NFRC. Architectural Digest ...
08/02/2024

Ever wonder how a window becomes ENERGY STAR certified and what that means? It all starts at NFRC. Architectural Digest provides an overview in this article.

Discover how energy-efficient windows earn an ENERGY STAR rating and what that rating means for lowering your home’s heating and cooling costs.

05/14/2024

The National Fenestration Rating Council (NFRC) board of directors recently approved three NFRC documents which are now open for public review according to the ANSI - American National Standards Institute’s process.
https://tinyurl.com/4cew65ca

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Greenbelt, MD
20770

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