Air filtration supplies the means to obtain the level of particulate cleanliness required by any definition of “air conditioning.” It extends from the simple task of preventing lint and other debris from plugging heating/cooling coils to removing particles as small as 0.1 micron which could cause a short circuit on...

By D. Brian Baker, Custom Vac Limited January 2009 (reposted from NAFA) Of course there is no single answer to this question because it depends on many factors such as, what is the fan CFM on high, what is the fan CFM on low, is continuous fan being utilized, what...