The Hoffman™ Revolution™ is a high speed centrifugal blower, designed as the world’s most advanced energy management system. The Revolution™ is truly breakthrough technology that takes performance and power savings to new heights of efficiency, reliability and control. Incorporating infinite life cycle active magnetic bearings driven by a permanent magnet motor, which is controlled by a current source inverter (CSI) type variable frequency drive (VFD), and integrated HMI touch screen optimizes control and simplifies operation.