Proposed Addendum 56 amends the RESNET Mortgage Industry National Home Energy Rating Standards (MINHERS), Chapter 9 to establish Quality Assurance criteria for HERS® Modelers. HERS® Modeler is the new certification established by the RESNET Board of Directors required for all persons using RESNET accredited software to determine HERS® ratings for homes. SDC 900 submitts its first public review draft, PDS-01 Addendum 56, for public review and comment. Draft PDS-01 changes to Chapter 9 are shown with red print in strikeout/underline format. Comments will be accepted only on the text shown with strikeout/underline and in red print. To review the draft Addendum click on Draft PDS-01 MINHERS® Addendum 56 HERS® Modeler QA To submit your comments, click on RESNET Amendment Comment Online Form for Draft PDS-01 MINHERS® Addendum 56 HERS® Modeler QA Comments are posted real-time and you will be able to review comments that were submitted by clicking on Comments Submitted on Draft Draft PDS-01 MINHERS® Addendum 56 HERS® Modeler QA The public comment period will be open beginning September 15, 2021 and ending October 14, 2021.