ASHRAE IC 90.1-2019 Addenda ac

Addenda ac to Standard 90.1-2019 — Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IES Co-sponsored)
Amendment by ASHRAE, 2022

ASHRAE 34-2019 Addendum ad

Addendum ad to Standard 34-2019 — Designation and Classification of Refrigerants (ANSI Approved)
Amendment by ASHRAE, 2022