Vornado AC350 All-room Air Purifier uses real HEPA filtration, the most effective filtration available to remove over 99.995% of the allergens contained in the air up to 0.3 micron. The Vornado full-room air purifier circulates and actively filters the entire air in the room. Without strong circulation, the air purifier only cleans the immediate area around the device. The AC350 uses a radial fan to aspirate and clean the entire room air - up to a size of up to 30 m². Thanks to precision technology, the fan operates quietly despite its strong air flow. The AC350 uses a combination of HEPA and carbon filtering to remove dust, pollen, pet sheds, smoke, Bacteria, mold spores, dust mites and more. The carbon pre-filter adsorbs both odors and larger particles. It has 3 speeds, electronic push button control, filter change indicator and an industry-leading 5-year limited warranty. A real HEPA filter (MD1-0022) and an activated carbon pre-filter (MD1-0023) are included in the delivery. This product does not emit ozone.This text is machine translated.