What’s New in Standard 90.1-2022—Mechanical Updates, Part I: HVAC&R and Service Water Heating

This article describes changes to ANSI/ASHRAE/IES Standard 90.1-2022, Energy Standard for Sites and Buildings Except Low-Rise Residential Buildings with respect to the HVAC&R (Section 6) and Service Water Heating (Section 7) portions of the standard. Mechanical equipment efficiency, followed by a breakdown of the changes to the mandatory and prescriptive requirements of Section 6 and Section 7, respectively, are covered.