As part of its efforts toward improving the MINHERS section 303.1, RESNET® has released draft PDS-01 of Addendum 74. The Addendum includes a definition for Space Constrained Air Conditioning and Heat Pumps for utilizing SEER2/HSPF2 Conversion Factors established by Addendum 71. It also removes the self-expiring COVID pandemic exception (RESNET Addendum 61), for the use of defaults values for leakage and airflow in lieu of test determined values and to add a normative footnote definition for Space Constrained AC and Heat Pump which expired 30 days after the federal COVID pandemic emergency declaration expired.

Please feel free to comment on all proposed changes, which are shown by strikes through and underlines.
To review the MINHERS Addendum 74, click here:
To submit your comments, click here:
Comments will be accepted starting August 30, 2023, and ending September 29, 2023.

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