Many manufacturers claim that their electronic air cleaners are effective on particles down to 0.01 micron or smaller. However, as the NAFA Guide to Air Filtration (1993) points out, "Usually no information is given about the fractional efficiency of the device, that is, its efficiency on particles of a certain size." Studies on this appear in technical literature; the energy engineer is referred to the NAFA Guide to Air Filtration as a comprehensive resource on the subject of electronic filtration.
The NAFA Guide to Air Filtration (1993), notes that,
The ability of an electronic air cleaner to remove dust from an air stream depends on a variety of factors. Some of these are:
Voltage on ionizer and collector
Electronic air cleaner applications
Electronic air cleaner prefiltration
