What is NFRC?

NFRC's primary goal is to provide accurate information to measure and compare the energy performance of window, door, or skylight products.

National Fenestration Rating Council (NFRC) is a non-profit, public/private organization created by the window, door and skylight industry. It is comprised of manufacturers, suppliers, builders, architects and designers, specifiers, code officials, utilities and government agencies. NFRC provides consistent ratings on window, door and skylight products.

Rating System NFRC has established a voluntary national energy performance rating and labeling system for fenestration products. The NFRC label rates:  U-factor, or how well a window keeps heat inside a building. · SHGC - Solar heat gain, or a window's ability to block warming caused by sunlight. · VT - Visible light transmittance, or how much light gets through a product.     NFRC is working on ratings for optical properties, condensation resistance, long-term energy performance and seasonal heating and cooling ratings. When a manufacturer decides to certify and label its products, it is committing itself to provide accurate, fair and reliable energy-related performance information.  This helps consumers, architects, builders -- and the fenestration industry itself.