ASHRAE Journal - September 2022 - 28
IEQ APPLICATIONS
Column
Brendon J. Burley
Ventilation and Acceptable Indoor Air Quality
An Update on ANSI/
ASHRAE Standard 62.1
BY BRENDON J. BURLEY, PH.D., P.E., MEMBER ASHRAE
Another continuous maintenance cycle for ANSI/ASHRAE Standard 62.1 has
concluded, and the keen observer will have already noticed one of the changes made
in the 2022 edition of the standard. Despite the conditions created by the COVID-19
pandemic, the committee has continued to meet over the past two years, more often
in web conferences than in person, to consider continuous maintenance proposals
and interpretation requests and to discuss issues related to ventilation and indoor
air quality. The addenda that have been adopted to the 2019 edition of that standard
generally fall into three categories: clarifications, harmonization and improved
procedures. Work was also begun on mandatory air density corrections, further development
of humidity control requirements and addressing future extreme events, but
this work was not completed in time for inclusion in the 2022 edition of the standard.
A New Name
One of the earliest changes to the standard this cycle
was the change in the title from Ventilation for Acceptable
Indoor Air Quality to Ventilation and Acceptable Indoor Air
Quality. This may seem like a trivial change, but it recognizes
that there are many factors that contribute to
acceptable indoor air quality beyond ventilation and
that the standard already includes many requirements
not directly related to ventilation, such as requirements
for system components (e.g., drain pans, louvers, filters,
etc.), building envelopes and types of buildings (e.g.,
those with attached garages). Most importantly, by separating
ventilation from acceptable indoor air quality,
which occurred prior to the pandemic, the committee
28
ASHRAE JOURNAL ashrae.o rg
S E PTEM B E R 2022
showed humility in recognizing that even adherence
to the procedures in the standard did not guarantee
acceptable indoor air quality due to factors both recognized
in the standard, such as unusual sources, and
unpredictable factors such as the global pandemic
that would emerge mere months after this change was
approved.
A New Look
Speaking of unusual sources, readers of the 2022 edition
of the standard will find an updated definition
Brendon J. Burley, Ph.D., P.E., is the healthcare practice leader for Burdette, Koehler,
Murphy & Associates, Inc., in Baltimore. He is the chair of the ventilation subcommittee
of ASHRAE SSPC 62.1 and a member of ASHRAE's Environmental Health Committee.
https://ashrae.org/
ASHRAE Journal - September 2022
Table of Contents for the Digital Edition of ASHRAE Journal - September 2022
Contents
ASHRAE Journal - September 2022 - Intro
ASHRAE Journal - September 2022 - Cover1
ASHRAE Journal - September 2022 - Cover2
ASHRAE Journal - September 2022 - 1
ASHRAE Journal - September 2022 - Contents
ASHRAE Journal - September 2022 - 3
ASHRAE Journal - September 2022 - 4
ASHRAE Journal - September 2022 - 5
ASHRAE Journal - September 2022 - 6
ASHRAE Journal - September 2022 - 7
ASHRAE Journal - September 2022 - 8
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ASHRAE Journal - September 2022 - Cover3
ASHRAE Journal - September 2022 - Cover4
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