A turbo chiller and a chiller system are disclosed. The turbo chiller includes a compressor including an impeller for compressing a refrigerant and a motor for driving the impeller, a condenser configured to perform heat exchange between condensed water and the refrigerant introduced from the compressor, an evaporator configured to perform heat exchange between chilled water and the refrigerant discharged from the condenser, and an expansion valve disposed between the condenser and the evaporator. The compressor, the evaporator and the condenser are arranged to be stacked in a predetermined direction.