Abstract: An improved control system for a pulse combustion apparatus is disclosed. The system includes starter means operable to activate blower means for starting the apparatus. First switch means is provided and is responsive to a first predetermined air velocity in the air intake of the apparatus as representing satisfactory operation of the blower means. The first switch means is coupled to and adapted to activate the gas supply means and ignition means of the apparatus when the first predetermined velocity is achieved. Second switch means is also provided and is responsive to a second predetermined air intake velocity representing establishment of combustion in the combustion chamber and adapted to deactivate the ignition means and blower means while maintaining the gas supply when the second predetermined air intake velocity is achieved.