For Allergy Sufferers Recommended for all individuals that want top of the line filtration of airborne particles, dust and allergens and who don't need gaseous chemical or odor control. Applications - Mold spore control - Pet dander control (cat, dog, bird, etc.) - House dust mite allergen control - Pollen control - General indoor particle control The world's most efficient HEPA air cleaner in its class. Incorporates H12/13 class certified HEPA filter, normally used in multi-million dollar cleanrooms. This certification under the world's most stringent HEPA filter test, European Norm EN 1822, is the basis for this air cleaners' ability to capture up to 100 times more particles than conventional HEPA cleaners. In fact, while other air cleaners are rated only for particles down to 0.3 microns, IQAir systems have been found to remove particles down to 0.003 microns with close to 99.5% efficiency.