The Quincy Compressor QED series cycling refrigerated air dryer is energy efficient and available in capacities ranging from 15 to 2100 CFM. Featuring rotary technology with few moving parts, the QED offers low noise levels, minimal vibrations, and zero-loss electronic drains. Instead of using a glycol bath for cooling, the QED utilizes smart RH technology to ensure the air is dried to a non-corrosive RH level, protecting against freezing conditions. The cycling sensors automatically switch the operation mode to non-cycling when freezing conditions are detected. For models 650 CFM and above, the integrated flow switch deactivates the dryer when no flow is detected.