![]() ![]() New requirement that natural ventilation consider the quality of the outdoor air and interaction of the outdoor air with mechanically cooled spaces.Revised scope to specifically identify occupancies previously not covered.Modified Natural Ventilation Procedure calculation methodology.Simplified version of the Ventilation Rate Procedure, improving calculations for system ventilation efficiency and zone air distribution effectiveness.New informative tables of ventilation rates per unit area for checking new and existing building ventilation calculations.Significant changes to Standard 62.1 include: Sherri ( November 8, 2019) – ASHRAE has released updated editions of its standards for ventilation system design and acceptable indoor air quality (IAQ).ĪNSI/ASHRAE Standard 62.1-2019, Ventilation for Acceptable Indoor Air Quality, specifies minimum ventilation rates and other measures for new and existing buildings that are intended to provide IAQ that is acceptable to human occupants and that minimizes adverse health effects. ASHRAE Releases Updated Versions of Standards 62.1 and 62.2 ![]()
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