Oreck’s AirInstinct® 100 takes the guesswork out of using air purifiers. Its unique PATH™. (Pre-filter, Anti-odor, True HEPA) filtration system, continuously monitors particles in the air passing through its sensor and adjusts its airflow speed accordingly. Set it on automode and it does the thinking for you. Its four-color lighting system lets you know when it’s working and at what setting. Perfect for rooms up to 221 sq. ft.ˆ