PROBLEM TO BE SOLVED: To provide a convenient heating apparatus for efficiently heating the inside of a house.SOLUTION: The heating apparatus includes: a dual structure furnace body 1 in which an air insulating layer 12 is formed at an outer periphery of a heating chamber 11 of which a flame is irradiated； a heat recovery chamber 4 communicating to the heating chamber 11 via an exhaust tube 3； an air blower F1 delivering the heated air in the heat recovery chamber 4 as mixed air with outside air into the air insulating layer 12； a mixing chamber 6 communicating to the heat recovery chamber 4 and the air insulating layer 12 to take the heated air in both from the chamber and the layer； an air blower F2 for releasing the heated air in the mixing chamber 6 to the outside by pumping the heated air； a temperature sensor S disposed at an upstream or downstream part of the air blower F2 to detect the temperature of the heated air flowing along a predetermined passage； and a burner 2 which is started/stopped based on an output signal of the temperature sensor S to radiate a flame to the inside of the heating chamber 11 when started.
