This best practice establishes air filtration guidelines for the removal of particulate, bioaerosols,
and gaseous contaminants for the protection of the air handling equipment and components,
as well as providing comfort and a healthy environment for all who work, visit, live and play
in these facilities. The recommendations in this guideline are considered by NAFA to be “best
practice” in contrast to “minimum standards” as put forth by other organizations. It will serve
to provide owners and facility managers with the necessary information to develop effective
filtration strategies for their facility’s Indoor Air Quality (IAQ) and Life Safety Programs.