4-stage cleaning process removes 99.97% of airborne pollutants as small as 0.3 microns, including germs, viruses, chemical vapours (VOCs), pollen and dust. Auto mode uses built in sensors to monitor the air quality and automatically adjust the fan speed to keep the air purified. User friendly display panel effectively communicates machine performance and Filter Change Indicators signal when the Carbon and True HEPA filters need replacing. Filters included with Air Purifier. Medium PlasmaTRUE Air Purifier recommended for rooms up to 21 square meters (1-3 people)