The 623DC is the latest addition to our ever-growing line of Energy Smart™ air circulators. Combining our classic style with a more-powerful airflow (up to 80'), the brushless DC motor 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 Action creates whole-room circulation, keeping the entire room cool and comfortable. With our 10-year satisfaction guarantee, these DC circulators will keep you comfortable for years (and years) to come.