The HEPA Clean Compact Air Purifier offers low maintenance, effective air cleaning with a permanent HEPA-Type filter. The 3-stage filtration system first helps clean the air by using a washable pre-filter to capture large airborne particles. It then passes through the permanent HEPA-Type filter, capturing up to 95% of microscopic particles such as mold, spores, pollen, pet dander, smoke, and dust. The filtered air then enters an ionizer field providing extra cleaning and air freshening. Claims are from the air that passes through the filter.