Abstract: A heating apparatus is disclosed wherein a combustion chamber which contains the fuel to be burned is located adjacent to an air heating chamber. Conduit means communicate from the air heating chamber to the combustion chamber for the purpose of leading air, which has been heated within the air heating chamber, into the combustion chamber. Blower means draw ambient air from the space surrounding the heater into the air heating chamber where it is blown through the conduit means into the combustion chamber to promote efficient combustion of the fuel.