Residential Ventilation Standards

Home inspection ventilation standards are published by ASHRAE. These standards define requirements for ventilation and air-cleaning system design, installation, commissioning, and operations and maintenance. In addition to ventilation, the standards contain requirements related to certain contaminants and contaminant sources, including outdoor air, construction processes, moisture, and biological growth.

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ANSI/ASHRAE 62.1-2022

Ventilation and Acceptable Indoor Air Quality

Specifies minimum ventilation rates and other measures intended to provide indoor air quality (IAQ) that is acceptable to human occupants and that minimizes adverse health effects. Intended for regulatory application to new buildings, additions to existing buildings, and those changes to existing buildings that are identified in the body of the standard. Intended to be used to guide the improvement of IAQ in existing buildings. Applies to spaces intended for human occupancy within buildings except those within dwelling units in residential occupancies in which occupants are nontransient. Defines requirements for ventilation and air-cleaning system design, installation, commissioning, and operations and maintenance. In addition to ventilation, this standard contains requirements related to certain contaminants and contaminant sources, including outdoor air, construction processes, moisture, and biological growth. Dual units of measurement.

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ANSI/ASHRAE 62.2-2022

Ventilation and Acceptable Indoor Air Quality in Residential Buildings

Defines the roles and minimum requirements for mechanical and natural ventilation systems and the building envelope intended to provide acceptable indoor air quality (IAQ) in residential buildings. Applies to dwelling units in residential occupancies in which the occupants are nontransient. Considers chemical, physical, and biological contaminants that can affect air quality. Thermal comfort requirements are not included in this standard. Informative Note: See ANSI/ASHRAE Standard 55, Thermal Environmental Conditions for Human Occupancy, for thermal comfort requirements.