DESC: HEPA Enviarcaire QuietCare Air Cleaner 6 air changes per hour in a 12' x 14' room (168 sq. ft.). Intelli-Check electronic filter change indicators; 3 air cleaning power levels; Tobacco smoke particles CADR: 130. * Honeywell s QuietCare HEPA Air Cleaner incorporates patented airflow technology with sound reducing features for ultra quiet high speed operation: 1. Sound reducing insulation. 2. Patented air cleaner technology. 3. Specially designed blade for maximum airflow and minimum noise. 4. Specially designed air intake and exhaust grills. 5. Rubber isolated motor mount. 6. Soft cushioned feet.