ASHRAE 90.1 2022 Energy Standard for Bld. Except Low Rise Residential I-P

The 2022 edition of Standard 90.1 incorporates over 80 addenda to the 2019 edition. Major additions appearing for the first time in a minimum-efficiency U.S. model energy standard or code at the national level include:

• A minimum prescriptive requirement for on-site renewable energy
• An optional Mechanical System Performance Path allowing HVAC system efficiency tradeoffs based on the new total system performance ratio (TSPR) metric
• New requirements to address the impacts of thermal bridging