PDS-01 BSR/RESNET/ICC 301-2022 Addendum C-202x.

Proposed standard BSR/RESNET/ICC 301-2022 Addendum C-202x amends the 2022 edition of Standard 301 to provide clarifications and interim updates. The proposed revisions address: clarifications to improve the consistency of rating software calculations; definitions and acronyms for terms used in the Standard; new federal HVAC appliance SEER2 and HSPF2 ratings and ceiling fan ratings; the treatment of shared water heater losses for multi-family dwelling units; balanced mechanical ventilation; duct leakage where all ducts are within conditioned space; carbon dioxide index calculations; onsite battery storage; multiple end use loads; interior shading, and; reporting of the edition of standard ANSI/RESNET/ICC 301 that rating calculations are compliant with. While a realistic quantitative assessment of the impact of the proposed changes on Energy Rating Index scores will rely on the availability of updated rating software, a preliminary assessment is provided by the Standard Development Committee.

Draft PDS-01 of BSR/RESNET/ICC 301-2022 Addendum C-202x is submitted for public comment for 45 days, beginning January 13, 2023, and ending February 27, 2023Only the changes shown in draft PDS-01 by strike-through and underline and red print are open for comment. To review and comment on the Draft follow the links below.


Review Draft PDS-01, BSR/RESNET/ICC 301-2022 Addendum C-202x, Interim Updates


Comment on Draft PDS-01, BSR/RESNET/ICC 301-2022 Addendum C-202x, Interim Updates


View comments on Draft PDS-01, BSR/RESNET/ICC 301-2022 Addendum C-202x, Interim Updates


Tips and Reminders for Submitting Public Comments 

  • Comments must pertain to the changes to ANSI/RESNET/ICC 301-2022 shown as either strike-through or underlined text in red print in draft PDS-01. Comments on portions of draft PDS-01 where no change is indicated will be rejected.
  • Comments must include a specific proposed change to the text of the draft open for comment. 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 standards other than this one that is out for public comment.
  • 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 with 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/