2019 Version of ASHRAE Standard 62.2 Released

Update Allows for More Design Flexibility with Optional Particle Filtration Credit

ANSI/ASHRAE Standard 62.2-2019, Ventilation and Acceptable Indoor Air Quality in Residential Buildings, allows for more design flexibility through the use of the optional particle filtration credit, said Iain Walker, Ph.D., Fellow ASHRAE, chair of the standard's project committee.

The updated standard's compartmentalization requirements will mean designers and practitioners need to pay more attention to this aspect of building construction to be in compliance with the standard.

The other changes will both simplify the calculations and lead to better estimates of total ventilation that will not require significant changes to building practice. There may be small changes to minimum mechanical system airflows for unbalanced systems, but this will still allow ventilation systems to be installed that designers and practitioners are already familiar with, said Walker. The standard also allows for single-point envelope leakage test results to be used when calculating infiltration credit.

The 2019 version of the standard is now available.