The Vornado AC500 Whole Room Air Purifier uses True HEPA filtration, one of the most effective filters available, to remove up to 99.97 percent of airborne allergens down to 0.3 microns in size. Combined with Vornado’s industry-leading airflow technology, the AC500 actively circulates and filters all the air throughout a room, not just the immediate area around the unit.

An air purifier, even at 99.97 percent capture rate, is only effective if it is able to pull large volumes of air through the unit and disperse the purified air throughout the room. Vornado has combined a powerful blower with precise aerodynamics, to effectively clean all the air in the room. With Vornado's two stage Carbon and True HEPA filtration - the air leaving the unit is filtered of odors and 99.97 percent of airborne particles such as dust, pollen, dander, smoke, bacteria, mold spores and dust mite debris (0.3 microns or larger).

Carbon filtration captures odors and prolongs HEPA filter life. True HEPA filtration captures 99.97 percent of particles 0.3 microns or larger to effectively clean large volumes of air.