The YORK YVAM air-cooled magnetic bearing centrifugal chiller operates with the ultra-low global warming potential (GWP) refrigerant, R-1234ze, for hyperscale and colocation data center cooling. This unit’s magnetic-bearing technology allows the system to operate efficiently at low lift conditions. This means the chiller does not need free cooling coils to deliver performance comparable to air-cooled chillers with integral water-side economizers. This unit can improve efficiency by 49 percent in non-standard part load value (NPLV) in typical data center conditions.