Updated definitions, clarified air density adjustments, and removal of items related to transient occupancies that now fall under Standard 62.2.

Relocated health-care-related spaces in the scope of ASHRAE/ASHE Standard 170 to a new normative appendix.

Continued focus on IAQ, including improvements to the IAQ Procedure, setting maximum dew-point temperatures in mechanically cooled buildings and required exhaust air separation distances.

Reorganized Section 5, “Systems and Equipment,” to better reflect the path of airflow and illustrate how buildings, systems, and equipment are related.

New in the 2022 edition of the standard are changes that represent years of research, statistical evidence, and improved building systems and technologies: To signify that indoor air quality goes beyond minimum ventilation requirements-and in recognition of those aspects of building systems (equipment, filtration, controls, and more) that contribute to acceptable IAQ-the title of the standard has been updated to “Ventilation and Acceptable Indoor Air Quality.” Since its original publication, Standard 62.1 has been revised and enhanced in ways that make it more than an air treatment and ventilation standard. The standard provides procedures and methods for meeting minimum ventilation and IAQ requirements to engineers, design professionals, owners, and jurisdictional authorities where model codes have been adopted. Standard 62.1 specifies minimum ventilation rates and other measures intended to provide indoor air quality (IAQ) that’s acceptable to human occupants and that minimizes adverse health effects.

Expanded and revised for 2022, both standards specify minimum ventilation rates and other measures in order to minimize adverse health effects for occupants.ĪNSI/ASHRAE Standard 62.1-2022, Ventilation and Acceptable Indoor Air Quality

The Standards for Ventilation and Indoor Air QualityĪNSI/ASHRAE Standards 62.1 and 62.2 are the recognized standards for ventilation system design and acceptable indoor air quality (IAQ).

Iso office 2019 standard