The WINIX P150 Air Purifier combines advanced air cleaning technologies designed to capture Dust, Pollen, Pet Dander, Smoke, Mold Spores, Organic Chemicals, and Household Odors and is best used in a small bedroom, nursery or office. Bolstering 3-stage Filtration with Activated Carbon Pre-Filter, 99.97% True HEPA Filter and WINIX PlasmaWave® Technology. TECHNICAL SPECS: Room Capacity - 14 m2 (150 Sq. Ft) Wattage - Low 4 W/ Turbo 40 watt Fan Speed / Auto Mode - 4 / Yes Sound Level (dB) per fan speed - 26 / 35 / 43 / 52 dB Air Flow - 0.7 / 1.3 / 2.0 / 2.8 m3/min Air Changes Per Hour - 8.2 CLEANING SYSTEM: Filter - True HEPA 99.97% Carbon Filter - Activated Carbon Additional Filter - Pre Filter Carbon Plasma Wave - yes Antimicrobial additive - Clean cell TM FEATURES: Air Quality Indicator - 5 levels Gas, Odor, Dust Sensors - Yes Change Filter Light - Yes INTERNATIONAL CERTIFICATIONS: CE; ROHS; Energy Star; Ozone Free, AHAM: Smoke / Dust / Poll : 98/98/103 Unit Weight: 6 Kgs