Draft PDS-01, RESNET/ICC 301-202x Update

Proposed standard RESNET/ICC 301-202x amends ANSI/RESNET/ICC 301-2022, to update the standard for the 2025 edition. The amendments in candidate standard RESNET/ICC 301-202x when incorporated with the amendments made by Standard 301-2022’s Addenda A, B, C, E and F will form the 2025 edition of Standard 301.

A summary of the changes to Standard ANSI/RESNET/ICC 301-2022 open for comment in this draft include:

  • Replace fan efficiency with specific fan power
  • Incorporate interpretations of Standard 301-2022 on
    • Hot Water Distribution Piping Insulation Requirements
    • Hot Water Distribution Pipe Length Calculation Requirements
    • Fixture Factor Determination
  • Modify the definition of Bedroom to align Standard 301, Energy Rating with candidate Standard 850-202x, H20 Rating
  • Energy rating software modeling consistency changes
    • MINHERS Addendum 53f issues
    • Air Source Heat Pump modeling clarification
    • Natural ventilation clarification
    • Eae removal
    • Effective Duct R-values (and buried ducts)
    • Index Adjustment Design issue fix
    • Specify thermal properties of CMU walls.

This is the first public review draft, PDS-01 of RESNET/ICC 301-202x. It is submitted for public review and comment for 45 days, beginning July 26, 2024, and ending September 9, 2024. Only the changes shown in draft PDS-01 with strike-through and underline and red print are open for comment.

To review the draft, please check back on July 16th, 2024.

To submit your comments, click on “SUBMIT COMMENTS HERE” below.

Comments are posted in real time and you will be able to review comments by clicking on “VIEW COMMENTS HERE” below.

Tips and Reminders for Submitting Public Comments 

Comments must pertain to the changes shown in the draft as either strike-through or underlined text in red print. Comments not on the changes under consideration will be rejected.

Comments should include a specific proposed change to the text of the draft open for comment and an explanation sufficient for the review committees to understand the commenter’s concern or objection. Proposed added text must be underlined and text proposed to be removed must be shown using strike-through. If not submitted in this format, the public comment may be rejected.

Do not submit comments on other chapters or on sections or proposed changes that are not identified as open for public comment by red print. Comments not on the proposal under consideration will be rejected.

If you submit public comment representing the collective interests of a group of stakeholders, you are encouraged to submit ONE public comment and identify all stakeholders in that comment. While not required, this expedites the ability of the committees to respond to commenters in a timely manner.

Public comments are reviewed by committees comprised of volunteer members, that are Raters, Providers, Software Developers and other industry and public interest stakeholders. They are not reviewed by RESNET Staff.

Most amendments to RESNET standards are proposed by industry and public stakeholders not RESNET. To learn more about submitting proposed amendments visit this page: https://www.resnet.us/about/standards/submit-proposed-amendments/

The public comment is closed.

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