Draft PDS-02 Addendum 82, DX AC/HP Modeling RESNET® releases draft PDS-02 of Addendum 82, DX AC/HP Modeling, for public review and comment. The addendum establishes requirements for rating software modeling of direct expansion air conditioner and heat pump systems and will be incorporated into RESNET accredited rating software to improve the accuracy and consistency of ratings. The draft addendum, comment form, and comments received are posted at PDS-02 Addendum 82. The entire draft PDS-02 is open for comment. Public comments will be accepted from April 21, 2025, through May 23, 2025.
