A variable capacity evaporator system includes an evaporator having a plurality of independent circuits assembled as a unit, each circuit arranged in circuit groups and defining a fluid flow path, each circuit group including at least one circuit. The system further includes a plurality of flow control devices, each flow control device of the plurality of flow control devices in fluid communication with a respective circuit group and operative to vary a fluid flow through the respective circuit group, and a common header in fluid communication with a low-side each of the plurality of circuit groups. A controller is operatively coupled to each flow control device, the controller including logic configured to independently control each flow control device to regulate fluid flow through the respective circuit group based on a superheat at each circuit group and a superheat at the common header.