This UV air purifier drastically reduces pathogens like influenza and gastro as well as black mold from your breathing air. Airpura's 18 lbs of custom blended activated carbon adsorbs chemicals, VOC's gases, and odor. Airpura’s patented TitanClean™ technology developed by NASA dramatically increases the range of chemicals that can be adsorbed while a medical grade True Super HEPA filter with titanium dioxide provides powerful particle reduction of 99.99% of particulate matter as small as 0.3 microns including PM2.5, pollen, dust, dander. Effective for rooms  up to 2,500 square feet. Provides a complete air exchange every 30 minutes.