Abstract: A motor vehicle heating device with a burner which has a combustion chamber which is coaxially surrounded, at least in part, by a heat exchanger which has a closed end at an end of the combustion chamber opposite that at which the burner is located, and which has an annular space, which is defined between an outer wall and inner wall, through which a liquid heat transfer agent flows. The heat exchanger is made of a one-piece construction, so that the end of the heat exchanger joins its outer and inner walls, and at the same time, its inside faces the combustion chamber. By this construction, the liquid-carrying part is essentially formed by a single part, so that no integrity problems can occur between the liquid-carrying annular space and the exhaust gas-carrying interior of the heating device and production costs are reduced.

Abstract: A heater, in particular a motor vehicle heater, has a muffler insert in the exhaust gas outlet, a muffler insert that reduces, in particular, disturbing, low-frequency combustion noises. With the aid of the muffler insert, the exhaust gas stream in the area of the exhaust gas outlet of the heater is divided into at least two partial streams. The muffler insert can be made as a sheet metal part having hollow bodies that are made of pipe pieces. Alternatively, the muffler insert can be made as a one-piece cast part.