A fusing apparatus having a segmented external heater is provided. The fusing apparatus includes a rotatable pressure roller, a rotatable heated fusing member having an external surface forming a fusing nip with the pressure roller, and a rotatable segmented external heater mounted in heating nip contact with the external surface of the fusing member for heating the external surface of the fusing member, the rotatable segmented external heater having (a) an endless rotatable shell defining an interior surface and an exterior surface, a first end, a second end, and an axis of rotation; (b) a plural number of heating elements each having an end-to-end length and being arranged end-to-end in series and parallel to the axis of rotation; and (c) a controller connected to the plural number of heating elements and to the rotatable heated fusing member controlling the temperature of the external surface the fusing member.