AwesomeWare Air Purifier True, 17X11, Full Color Triple Filteration Ture HEPA air purifier for small room and office works well for pets, allergies or smokers. Assembled with Pre-filter, True HEPA Filter and Activated Carbon Filter inside, True HEPA Filter effectively reduces 99.97% of dust and daily allergy factors such as dust, mold spores, pollen, pet hair, PM2.5, pet dander, etc. Activated Carbon Filter helps get rid of common odors from smoking, pets and cooking. Quiet Air Cleaner With 360intake from all directions design, AwesomeWare air purifier with the cylindrical air channel circulates the air faster while making less noise, running quietly through the night with lower energy consumption. Ultra High Efficiency 2 Adjustable speed settings provide options for meeting your needs. High-efficiency fan consumes power as low as 3 watts, lower than an energy-saving bulb. A low-energy, efficient HEPA air purifier can bring you more comfort. Air Purifier with Ionizer  The negative oxygen ion generator releases millions of negative ions to eliminate odors, no ozone or other harmful substances are produced. The air purifier effectively kills most bacteria and a small number of viruses, effectively removing smoke and other odors. Air Purifier Replacement Filter On average, the filter should be replaced every 6 months and is available for purchase (Search for: KJ50G-D4); the air filter may need to be replaced sooner or later depending on the air quality in your area