Sutter Hospital replaced its existing vane-axial ventilation system with Huntair's Fanwall Technology to improve efficiency and redundancy. The conversion involved installing two banks of fan cells while the existing system remained operational. This reduced power consumption by 40% while maintaining air delivery and static pressure, saving approximately $77,000 per year in energy costs. The Fanwall Technology eliminated system losses from sound attenuators and other components, reducing internal velocities to under 1,000 feet per minute.