Combining Vornado classic style with a more powerful airflow, 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 Vornado signature Vortex Action creates whole room circulation, keeping the entire room cool and comfortable. And with the 10-year satisfaction guarantee, these DC circulators will keep you comfortable for years and years to come.