Unlike an ordinary fan, a Vornado air circulator doesn"t just blow air. Instead, it produces true whole-room air circulation using Vortex Technology, exclusive to Vornado. So rather than being in the breeze or out of the breeze with an ordinary fan, you get an even temperature and circulation throughout the room. The Vornado 783B Whole Room Air Circulator uses the signature energy efficient Vortex Action to powerfully move air up to 100 feet to provide quality whole room air circulation and the best comfort. In addition to being one of Vornado"s most powerful circulators, the 783B can easily adjust the height from 27" to 42". Direct the airflow where you need it with the fully adjustable head. This air circulator is ideal for use in large rooms. Comes with an easy to use 3-speed control, the 783B Air Circulator is engineered to be simple to use and maintain. Use all year for energy savings in every season.