Abstract: There is disclosed a bidet seat housing in which are front and rear water jet nozzles and director members through which to pass water one or the other of the nozzles via a solenoid-operated diverter valve connected to the outlet fitting on top of an elongated horizontal water tank adjacent one end thereof, such tank having its inlet fitting on top adjacent the other end connected to a water supply line via a solenoid-operated pressure regulator. An external mode selector effects operation of one of either one of the solenoids or of a warm air blower for supplying warm air blower at the rear of the seat. The water tank contains a heater and a sensor with a temperature sensitive resistor. A control module has circuitry of which the sensor resistor is a part, and effects operation of the heater as needed to maintain water flowing through the tank at the desired temperature.