The present disclosure relates to a dishwasher. The dishwasher according to the present disclosure includes a cabinet forming an external shape; a tub which is disposed inside the cabinet, and forms a washing chamber in which dishes are processed therein; a first circulation duct through which air discharged from the washing chamber flows; a second circulation duct which sends the air flowing through the first circulation duct to the washing chamber; an outside air inflow duct through which air introduced from the outside of the cabinet flows; a heat exchange duct which heat exchanges the air flowing through the outside air inflow duct with the air flowing through the first circulation duct, and discharges the heat-exchanged air to the outside; and a fan assembly which is disposed in a lower side of the tub, and forms a flow of air, wherein the fan assembly includes: a first fan that rotates around a vertically formed rotation shaft, and forms any one of air flow from the first circulation duct to the second circulation duct or air flow from the outside air inflow duct to the heat exchange duct; a second fan which is disposed below the first fan and rotates around a vertically formed rotation shaft, and forms remaining one of air flow from the first circulation duct to the second circulation duct or air flow from the outside air inflow duct to the heat exchange duct; a fan housing forming a first chamber forming a space in which the first fan is disposed and a second chamber forming a space in which the second fan is disposed; and a fan motor which is disposed below the second fan, and rotates the first fan and the second fan.