The Vornado 633DC Energy Smart circulator is a gives you up to 80 percent energy efficiency with its powerful DC-motor that moves air up to 80 feet. Simple variable speed control gives you precise control of the signature Vortex Action creates whole-room circulation, keeping the entire room cool and comfortable. Feel good. Use less. Plug in a Vornado Energy Smart circulator and youll automatically use up to 80% less energy than you would with a comparable AC motor product. Thats something to smile about. More power than ever before. With lesser fans, higher efficiency sometimes equates to less-powerful airflow not so with Energy Smart circulators. Combining a more-powerful, brushless DC motor with legendary Vornado engineering, our new line of circulators deliver power to spare. Precisely control your airflow. Nearly infinite speed settings let you zero in on your ideal atmosphere. Whether its a soft, silent flow, a turn-it-up crank or any point in between, precise controls enable you to dial in the airflow setting feels right for you. Circulate all the air in the room. A Vornado circulator uses special airflow called Vortex Action to circulate all the air in the room. The air flows fast, cool and constant to create a cooling experience unlike any other.