This amazing 4 in 1 (Air Purifier + Ionizer Design + UV Disinfectant + Humidifier) is great for medium sized areas. Elements ECO22 Description: 1- Air Purifier with 4 Stages including the H13 HEPA Stage that captures up to 0.02 Microns. 2- Very Quiet efficient customized motor from Japan & saves energy. 3- Laser Sensor for filter check 4- Ionizing stage 5- Humidifier function 6- UV Disinfection for bacteria and viruses from the air 7- Removes Formaldehyde