Cooling, purified airflow at your fingertips Our personal purifier fan is engineered to help improve your air quality. Its sealed filter combines an activated carbon and glass HEPA filter. Together, they capture gases and ultrafine particles from the air. It then uses Dyson Core Flow technology to project cooling, filtered air – precisely where you need it. Focused, personal cooling Delivers cooling, purified airflow – wherever you need it. Removes gases and 99.95% of pollutants An activated carbon and glass HEPA filter captures gases and 99.95% of ultrafine particles from the air. Dyson Core Flow technology Only Dyson personal purifier fans use Dyson Core Flow technology. This guides high-velocity air jets over a convex surface. They coalesce to project a focused stream of air. Precise airflow control This unique dome mechanism controls the strength of each air jet, so you can direct airflow precisely where you need it. Smooth oscillation Set your machine to rotate from side to side, to deliver airflow through a 70 ̊ range. Sleep timer At night, you can set the sleep timer for between 30 minutes and 8 hours. So you can keep cool and comfortable while you rest. Easy filter maintenance Built-in reminders show you when your filter needs changing. It’s quick and easy to do, to ensure your machine is always working at its best.