Abstract: A box heater system to be mounted in a box in which material is receivable for discharge therefrom. The box heater system includes a heat-generating assembly having a body including one or more channels formed therein, and one or more heating elements at least partially positioned in the channel(s), for generating heat and transferring the heat to at least part of the body. The body is movable relative to the heating element, and the heating element is movable relative to the body. The heat transferred to the body is at least partially transferable to the material received in the box.