The National Fenestration Rating Council board of directors announced that three updated NFRC documents centered around U-factors, solar heat gain and condensation are now open for public review.

The National Fenestration Rating Council (NFRC) board of directors announced that three updated NFRC documents are now open for public review according to the American National Standards Institute’s (ANSI) process. The public review and comment period runs from May 10 to June 24, 2024.

The documents are:

  • NFRC 100: Procedure for Determining Fenestration Product U-factors;
  • NFRC 200: Procedure for Determining Fenestration Product Solar Heat Gain Coefficient and Visible Transmittance at Normal Incidence; and
  • NFRC 500: Procedure for Determining Fenestration Product Condensation Index Ratings.

The documents are available electronically. All changes subject to public review have been previously balloted and approved by NFRC membership and the board of directors. The documents (with changes from the previous version shown in underline/strikethrough format) and additional details are available on the NFRC Documents in Public Review page.

Additionally, NFRC officials say the Standards Committee (which oversees the review process) needs a new member in the User category, which includes:

  • Consumers and consumer advocacy organizations;
  • Utilities and other energy service providers;
  • Architects, specifiers and design professionals;
  • Builders and other construction contractors; and
  • Similar parties with interests in fenestration issues.

NFRC submits any document that it wishes to become an ANSI Standard, as well as any amendments or modifications it proposes, for public review and comment in accordance with the ANSI-required procedures. The NFRC Community website has more information on the Standards Committee, including an application to join the committee and details on requirements and other categories.

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