Provided is a method for controlling a heating apparatus. The method for controlling the heating apparatus, in which a fuel tank and a fuel injection part are provided in a first passage that provides a moving path, and air introduced into the first passage to remain is discharged while fuel in the fuel tank is consumed and re-injected, includes a passage opening process of allowing the first passage to communicate with the outside through a discharge valve provided in the first passage, and a fuel pressing process of operating a fuel pump provided downstream of the first passage from the discharge valve to allow the fuel to moves toward the discharge valve.