Abstract: A hydromassage apparatus produces a whirlpool action in a conventional bathtub having a water inlet, conduit and drain valve control in the end of the bathtub. The hydromassage assembly is adapted to be partially immersed in the bathtub filled with a supply of water and includes a housing having a pair of leg portions positioned adjacent opposing sides of the drain valve control and down the ends of the bathtub. The leg portions have lower portions which are adapted to be immersed in the bathtub when filled with a liquid. The housing also includes an intermediate portion innerconnecting the leg portions. The housing has an inlet chamber and an outlet chamber extending between the lower immersed portions of the legs. The inlet chamber has at least one inlet opening in each of the legs for receiving liquid contained in the bathtub into the inlet chamber.