Below you will find brief information for Oil-Free. The Copeland Oil-Free Centrifugal Compressor features Aero-lift bearing technology, is compatible with lower-GWP refrigerants, and offers increased efficiency in chiller applications. It has two-stage impellers for a broader operating range, a brushless permanent magnet motor for high-speed applications, and a variable inlet guide vane. It has demonstrated up to 10% increase in full-load efficiency and up to 40% increase in IPLV above ASHRAE 90.1 2019 minimums. It has optimized system start and stop cycles through intelligent control algorithms.