Abstract: A cordless flatiron includes a sole plate with an exposed bottom surface forming an ironing surface and a top surface including a number of projections extending upwardly therefrom. A protective hood attached to the periphery of the top surface of the sole plate forms an evacuated, sealed chamber thereabove and a heat storage element is positioned in the chamber so as to be movable toward and away from the projections of the sole plate. The heat storage element is heated by an electric heating rod extending therein. A temperature responsive regulator element positioned between the heat storage element and the top of the sole plate and responsive to the temperature of the sole plate is arranged by its configuration to position the heat storage with respect to the upper ends of the projections of the sole plate and thus determine whether or not heat is conducted from the heat storage element to the projections of the sole plate and to the ironing surface of the sole plate.