A heating appliance comprising a heater body and electrical energy storage batteries, wherein: the heater body forms at least one face located along one of said anterior or posterior faces of the batteries bank, or above this batteries bank, proximate to this batteries bank, such that heat produced by the batteries bank is added to that produced by the heater body to create a circulation of air around the appliance, by convection; characterized in that the batteries are grouped together to form a batteries bank having a parallelepipedal shape which defines anterior and posterior faces of this bank; and in that the appliance comprises: - a first heat-insulating plate placed between the batteries bank and the heater body; - at least one convection plate, whose first side is in intimate contact with the anterior or posterior face formed by the batteries bank, so that a heat exchange is possible between this batteries bank and the convection plate; and - at least one means for fastening to a wall, located on a second side of the convection plate, opposite to said first side of said convection plate, this fastening means allowing mounting the appliance on this wall such that the convection plate is located away from the ground and away from said wall, in order that an air flow is possible, by convection, through the space arranged below the appliance and the space arranged between said convection plate and said wall. the heater body forms at least one face located along one of said anterior or posterior faces of the batteries bank, or above this batteries bank, proximate to this batteries bank, such that heat produced by the batteries bank is added to that produced by the heater body to create a circulation of air around the appliance, by convection; characterized in that the batteries are grouped together to form a batteries bank having a parallelepipedal shape which defines anterior and posterior faces of this bank; and in that the appliance comprises: - a first heat-insulating plate placed between the batteries bank and the heater body; - at least one convection plate, whose first side is in intimate contact with the anterior or posterior face formed by the batteries bank, so that a heat exchange is possible between this batteries bank and the convection plate; and - at least one means for fastening to a wall, located on a second side of the convection plate, opposite to said first side of said convection plate, this fastening means allowing mounting the appliance on this wall such that the convection plate is located away from the ground and away from said wall, in order that an air flow is possible, by convection, through the space arranged below the appliance and the space arranged between said convection plate and said wall. - a first heat-insulating plate placed between the batteries bank and the heater body; - at least one convection plate, whose first side is in intimate contact with the anterior or posterior face formed by the batteries bank, so that a heat exchange is possible between this batteries bank and the convection plate; and - at least one means for fastening to a wall, located on a second side of the convection plate, opposite to said first side of said convection plate, this fastening means allowing mounting the appliance on this wall such that the convection plate is located away from the ground and away from said wall, in order that an air flow is possible, by convection, through the space arranged below the appliance and the space arranged between said convection plate and said wall.