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ANSI/ASHRAE Standard 52.2-2007, Method of Testing General Ventilation
Air-Cleaning Devices for Removal Efficiency by Particle Size, establishes
a test procedure for evaluating the performance of air-cleaning devices as a
function of particle size.
Standard 52.2-2007, the most recent edition of this standard, incorporates
Addendum a into the standard’s previous edition, Standard 52.2-1999. Addendum
a changed the procedure for evaluating the results of the reference filter test
in order to make the reference filter test more practical and to allow a wider
selection of filters to fulfill the test requirements.
Standard 52.2 was developed so that both users and specifiers can compare
products, predict a uniform level of known performance under operating
conditions with reasonable certainty, and determine appropriate air-cleaner
efficiencies for specific situations.
Historically, standards for testing air cleaners have been developed in
response to the needs of the times. Protection of machinery and coils came
first, then reduction of soiling. Now concerns about indoor air quality and
respirable particles, protection of products during manufacturing, and
protection of HVAC equipment have prompted development of this test standard
based on particle size. 44pp.