Are ozone/negative ion air purifiers more effective than HEPA filters?
Yes. Negative ions and ozone can remove particles of a much smaller size than HEPA filters (which are the most effective filter). They can also cover a larger area much more thoroughly. This is due to the fact that filters rely on the air passing through the unit in order to be purified. Most airborne particulate in a room will not pass through a stationary filter though. On the other hand, millions of negative ions and ozone molecules are continually being generated by an ozone/negative ion purifier (e.g. Neo-Tec Ionizer). They are then transported throughout a room or open area by way of the existing air currents. It is very easy for them to travel throughout a single room or open area.
