The 3-in-1 GermGuardian Air Purifier with HEPA Filter is perfect for allergy sufferers. The HEPA filter captures 99.97% of dust and allergens as small as 0.1 microns in size, while the charcoal filter captures odors! More than just a filter, UV-C light helps reduce airborne bacteria, viruses, mold spores*, and works to reduce volatile organic compounds. Circulates the air 1x per hour in 915 square foot rooms and 4.8x per hour in 189 sq. ft rooms, making it ideal for medium to large sized rooms such as: dorm rooms, bedrooms, and other living areas! Includes a UV-C control and a filter change indicator. Choose from 3 speeds, including a low speed that runs ultra-quiet. *Tested with Staphylococcus Albus, and Escherichia Coli, Aspergillus Niger, and Phi-X174.