Vornado 783DC Energy Smart Large Stand Air CirculatorNOW AVAILABLE! Whole Room Circulation Moves Air Up To 100 Feet Up to 80% More Energy Efficient More Powerful Airflow Precise Control Variable Speed Adjustable Height To 25 Or 38 Combining our classic style with a more powerful airflow (up to 100), the brushless DC motor of the 783DC uses up to 80% less energy, bringing modern efficiency to the home. A return to variable speed puts you in precise control of your environment, and our signature Vortex