ASHRAE IC 90.1-2019 Addenda ab

Addenda ab to Standard 90.1-2019 — Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI Approved; IES Co-sponsored)
Amendment by ASHRAE, 2021

ASHRAE 62.1-2019 Addendum g

Addendum g to Standard 62.1-2019 — Ventilation for Acceptable Indoor Air Quality (ANSI Approved)
Amendment by ASHRAE, 2021