Air heater for a motor vehicle

An air heating apparatus for integration into an air-guiding housing for a vehicle with an interior space, comprising:

• a combustion air supply line assigned to a burner head and at least one nipple assigned to a burner unit for withdrawal of exhaust gas;
• and
• a flange plate which provides a seal of the at least one exhaust gas nipple which is fixedly joined to the flange plate and extends through the flange plate with respect to the vehicle interior space, by means of sealing elements between a mounting location for the air heating apparatus and the flange plate, and between the air heating apparatus and the flange plate;
• wherein, the flange plate seals the combustion air supply line with respect to the interior space of the vehicle, and the burner head with the combustion air supply line are directly adjacent to but separatable from the flange plate, while the burner unit with the at least one exhaust gas nipple and a fuel supply line, which extends through the flange plate, assigned to the burner unit remain connected with the flange plate.