Coway Tower True HEPA air purifier with Air Quality Monitoring, Auto Mode, Timer, Filter Indicator, White (AP-1216L)The Coway Tower air purifier is designed specifically for a bedroom, apartments and small spaces. The sleek tower design uses advanced multi-stage filtration with a long-life HEPA filter that has a one-year lifespan(The actual life span will be determined by indoor air quality and operation of the unit). Though designed for small spaces, the Coway Tower is fully featured with a filter-change indicator, multiple airflow modes and controls, and a helpful timer.