Quietflo is 99.97% effective to 0.3 microns. CADR rating: Smoke 260, dust 260, pollen 245. changes air up to 6 times per hour in 19 x 21 room. 30% better odor reduction.

This portable air cleaner is recommended for filtering the air in a closed room as large as 168 square feet (12 by 14 feet). As it continuously circulates a room's air--about six times per hour--it employs two filters to remove smoke, pollen, dust, animal dander, dust mites, molds, bacteria, viruses, and odors. Especially useful for asthmatics[Read More]

Honeywell SilentComfort True HEPA Air Purifier with Advanced airflow design for ultra quiet high speed operation. This True HEPA air purifier removes at least 99.97% of airborne particles as small as 0.3 microns from the air that passes through the filter. 150 CADR / Recommended Room Size 15' x 15'. Replacement Carbon Universal Prefilter: 38002.

Permanent IFDAir Purifier with filter that is washable and vacuumable & never needs replacement!

True HEPA filter removes 99.97% of all airborne particlesfrom the air passing through the filter such as pollen, cat dander,household dust, tobacco some & mold spores