Domestic heating furnace

The utility model relates to a domestic heating furnace, comprising a combustion chamber, a dust collecting chamber and a water bag. Heat exchange pipes vertically penetrated and arranged in an inner cavity of the water bag are composed of a plurality of heat exchange pipes whose lower ports are communicated with the combustion chamber and upper ports are communicated with a heat collecting chamber arranged on the water bag and a plurality of heat exchange pipes whose lower ports are communicated with the dust collecting chamber and upper ports are communicated with the heat collecting chamber. The upper part of the water bag is provided with a drainage pipe mouth of hot water and an exhaust pipe communicated with atmosphere, and the side wall of the water bag is provided with a water inlet pipe mouth and a drainage pipe mouth. The water inlet pipe mouth is respectively connected with a water complementing tank, a tap water pipe and a water return pipeline of a heating radiator through pipelines, and a water pump is arranged in the water return pipeline of the heating radiator.