An appliance including: a vessel to receive a liquid, the vessel having a longitudinal axis, a bottom wall, and a side wall at least partly enclosing a chamber within which the liquid is heated, the chamber having an upper region axially spaced from the bottom wall, and a lower region located between the bottom wall and the upper region; a heating element within the chamber; a heater base including at least a portion of an induction coil; connections to deliver an alternating current to the induction coil to deliver a magnetic field to the lower region; the element being movable relative to the coil between an operative position at which the element is located within the lower region to be energised by the magnetic field to cause heating of the element, and an inoperative position at which the element is located in the upper region to not energize the element.