The present invention relates to a replaceable module for use with a thermal contrast therapy systems. The replaceable module may be an automated thermal contrast therapy module which includes a casing, a manual mixing valve, an automated mixing valve, an automated mixing valve actuator, a temperature sensor, and an interface. A cold and a hot fluid are mixed to generate a therapy fluid. The therapy fluid may be output to a therapy bladder. The second replaceable module is a compression therapy module which includes a casing, an air pump, a pneumatic solenoid, and a pressure monitor. The casing may include a pressurized air pathway including an air outlet. The pump may pressurize the air within the pathway, and the solenoid may regulate the air pressure using feedback from the pressure sensor. Additionally, a pressure relief valve may release pressure if it gets above a safety threshold. The compression therapy module may also include a fluid pathway.
