A heatable cavity (2) for a kitchen appliance (1), particularly for an oven, wherein the heatable cavity (2) comprises a plurality of cavity walls defining a cooking chamber (7) for cooking foodstuff, and a central opening for placing foodstuff into the cooking chamber (7), wherein the outer surface of at least one of the cavity walls comprises a coating (10) that comprises a material with a low emissivity, preferably wherein said material with a low emissivity has a lower emissivity than oxidized steel.