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.