In an image forming apparatus, a recording medium with a toner image is heated in a heat fusion region to fix the toner image on the recording medium. The image forming apparatus includes a heat pump. The heat pump includes a heat absorbing unit that absorbs heat from the recording medium and/or the toner image in a region that is different from the heat fusion region; and a heat radiating unit that release the heat, which is absorbed by the heat absorbing unit, to heat a recording medium with a toner image in the heat fusion region. Thus, the heat can be reused.