Pump with heater

The present invention relates to a pump (10, 110), in particular for dishwashing machines, comprising a housing composed of a housing bottom (28, 128), a housing cover (16, 116) and an interposed heating device (30, 130, 36, 136) for heating a flushing liquid which forms an annular side wall of the housing, with a cylinder disposed in the housing the impeller (40, 140) with a respect to the rotational axis of the impeller (40, 140) in the housing cover (16, 116) axially disposed suction nozzle (18, and 118) a pressure piece (20, 120), wherein the pressure port (20, 120) in the housing lid (16, 116) is arranged.