Abstract: A domestic cooker has a plenum chamber positioned to the rear of its oven cavity. Air is pump into the chamber by a fan which draws air around the outside of the cavity. Air exits from the chamber to atmosphere via a duct above the oven cavity having first passed over the cooker control panel to keep the latter at an acceptable temperature. The oven cavity has a door of a composite construction with inner and outer door panels spaced apart by a passageway open at the top and at the bottom of the door. Air from the plenum chamber flows to the passageway via a second duct located beneath the cavity. In another embodiment of the invention the cooker has two oven cavities each with a door of the composite construction, the passageways between the inner and outer panels of each door being supplied with air from a plenum chamber at the rear of the cavities.