The UV HEPAClean Tower Air Purifier features an advanced air cleaning system that combines 3 powerful air cleaning technologies into one delivering cleaner, fresher air to your home. Germ Fighting Ultraviolet Technology helps reduce certain viruses, bacteria, fungi and mold spores while the HEPAClean filters capture up to 99% of airborne particles such as dust, pet dander, smoke and pollen*. In addition, the enhanced odor control carbon zeolite pre-filter helps reduce common household odors such as pet, cooking, nursery and smoke odors. The long-life HEPAClean filters can be vacuumed or replaced when the Filter Check Light indicates the filter is dirty. The easy-to-use LCD controls give you up to 12 different cleaning power levels. It also features a 1-18 hour auto shut-off timer, an optional ionizer for extra cleaning power and optional oscillation to enhance air circulation. The sleek tower design saves space and will look great in any room in your home. Most effective for medium to large size rooms.