Abstract: An appliance such as a dishwasher is configured to re-circulate air to reduce the amount of air with high moisture content that is expelled from the dishwasher. In one embodiment, the dishwasher comprises a wash zone in which objects are positioned to be washed and a door assembly, secured to the dishwasher in sealing engagement. Air from an upper region of the wash zone is drawn into a door cavity in the door assembly and re-circulated to a lower region of the wash zone. Inside of the door cavity is a thermal sink with a surface on which vapor in the air condenses, thereby lowering the relative humidity of the air that is ejected from the door assembly and into the lower region of the wash zone.