Proposed Amendment to ANSI/RESNET/ICC Standard 301 on House Size Adjustment Released for Public Comment Deadline for Submitting Comments is December 19, 2016

November 15th, 2016 - Posted by Laurel Elam under RESNET News

The RESNET Standard Development Committee 300 has approved for submission to the RESNET consensus standard review and comment process a proposed Addendum E which amends Standard ANSI/RESNET/ANSI 301-2014 to incorporate adjustment factors for size and configuration in Energy Rating Index calculations. Current Energy Rating Index calculations result in a disparity in the rating index for large versus small dwellings similarly equipped and configured for energy efficiency. Larger dwellings have lower energy rating index values than smaller dwellings. The purpose of the amendment is to establish an index adjustment factor methodology that adjusts the rating index for size and configuration in order that similarly configured and equipped dwellings of different sizes and configurations will achieve an equivalent energy rating index.

The proposed draft amendment is posted at Adjustment Factors for Size and Configuration in Energy Rating Index Calculations

Public comments on the proposed amendment will be accepted until December 19, 2016.

To submit your comments click on RESNET Amendment Comment Online Form

RESNET will only accept comments submitted on the online form indicated by strike/underline in the addendum.

Comments are posted real time and you will be able to review comments that were submitted by clicking on Comments Submitted on Draft Adjustment Factors for Size and Configuration in Energy Rating Index Calculations Amendment

The public comment period will be open until December 19, 2016.

After the comment period, the RESNET Standard Development Committee 300 will consider and document each of the comments submitted and make appropriate changes. The revised proposed amendment then will be submitted to the RESNET Standard Management Board for final approval.

  • David Maschke

    Does anyone have some real-world analysis that shows how this will affect the ratings on various size homes? I’m in an area with a progressive HERS code and homes over 4500sf need an index of 35 or less. I wouldn’t expect a huge difference for a 4500sf home, but what about a 20,000sf home?

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