Never replace your filters again!** This Honeywell air purifier includes HEPA-Type filters that can be vacuumed and replaced back into the unit, saving money in replacement filter costs. The Honeywell HEPA-Type filter s efficiency is rated at 99% in capturing airborne particles such as smoke, dust, pollen, cat dander and mold spores*. The Electronic Filter Clean Indicator illuminates to remind you when to clean the filters. This model features three air cleaning levels and an independent ionizer control for extra cleaning power. Recommended for medium size rooms, the sleek tower design and quiet operation makes it ideal for any room in your home. 3 speeds. Independent ionizer control. Antimicrobial treated filter. AHAM Certified. Recommended Room Size: 13' x 13 (169 sq.ft.). AHAM CADR Rating: 110. **Based on ordinary use and care. *From the air that passes through the filter. HEPA-Type filter helps capture airborne particles that are 2 microns or larger in size from the air that passes through the filter.