HPAC Magazine

New ASHRAE Standards Available For Purchase

Expanded and revised for 2022, both standards specify minimum ventilation rates and other measures in order to minimize adverse health effects for occupants.

September 13, 2022   Logan Caswell

(Photo provided by: ASHRAE)

ANSI/ASHRAE Standards 62.1 and 62.2 are now the recognized standards for ventilation system design and acceptable indoor air quality (IAQ). Expanded and revised for 2022, both standards specify minimum ventilation rates and other measures in order to minimize adverse health effects for occupants.

ANSI/ASHRAE Standard 62.1-2022, Ventilation and Acceptable Indoor Air Quality

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. 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.

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. 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.

ANSI/ASHRAE Standard 62.2-2022, Ventilation and Acceptable Indoor Air Quality in Residential Buildings

Standard 62.2, ASHRAE’S consensus residential ventilation and IAQ standard for dwelling units with nontransient occupants, has been updated for 2022. The standard describes the minimum requirements to achieve acceptable IAQ via dwelling-unit ventilation, local mechanical exhaust, and source control.

Changes in the revised edition include reorganization and clarification of existing provisions, more stringent compartmentalization requirements for attached dwelling units, and a new requirement for supply or balanced dwelling-unit mechanical ventilation systems for attached dwelling units on enclosed corridors.

Significant changes in the 2022 edition include:

  • Improvements to organize and clarify existing provisions
  • An increase in the stringency of compartmentalization requirements for attached dwelling units
  • A requirement for supply or balanced dwelling-unit mechanical ventilation systems for attached dwelling units on enclosed corridors.

For more information, visit ashrae.org.

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