The National Fenestration Rating Council (NFRC) is the trusted, independent, nonprofit certification body for the energy performance of windows, doors, and skylights.

Jan 21, 2026 · One of NFRC's main functions is to promulgate technical standards that establish uniform procedures for determining the various energy performance ratings, including U-factor, Solar Heat …

NFRC is a third-party non-profit organization that sponsors certified rating and labeling to help consumers compare the performance of windows, doors, and skylights.

The National Fenestration Rating Council (NFRC) is a United States 501 (c)3 non-profit organization which sponsors an energy efficiency certification and labeling program for windows, doors, and …

Over 80% of Therma-Tru door and glass options are ENERGY STAR qualified and National Fenestration Rating Council (NFRC) certified. See how our doors can improve your home’s energy …

Simply filter by the product type and features you’re interested in, and the NFRC Certified Product Directory provides a list of NFRC-certified products that match your criteria so you know which …

Dec 1, 2024 · The National Fenestration Rating Council (NFRC) tests and certifies windows based on the window’s energy efficiency performance. These ratings are used by the Environmental Protection …

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NFRC certification gives consumers the assurance that your product has been rated by the world’s foremost expert in window, door, and skylight performance, in addition to ensuring compliance.

The National Fenestration Rating Council (NFRC) is the trusted, independent, nonprofit certification body for the energy performance of windows, doors, and skylights.