Airpac’s Air Handling Unit combination With Seibu-Giken's Hi-Panex-ION Total / Sensible Heat Exchanger Energy Recovery Wheel as name suggests, uses ION power to recover energy leading to more energy saving while achieving comfortable Air-conditioning. In a typical installation, the wheel is positioned in an Air Handling Unit so that it is divided into halves of Supply and Return Air Flow in counter flow directions with respective Filters, Heat Exchangers & Centrifugal Fans section to give Highest Level Performance .