Oreck's Air Response air purifier with DustSense technology sets it apart from other purifiers in the market. We really like that it can automatically monitor, detect and respond to dust particles and odour in a home, which helps improve air quality within the home. One of the best features we love is not needing to control the settings once we keep the air purifier in auto mode. Auto mode allows DustSense technology to monitor and detect the amount of particles in the air, which automatically senses and responds to deliver cleaner air. This takes the guesswork out.