Energy-saving air heater for automobile

The utility model relates to the technical field of air heaters. The energy-saving air heater for the automobile comprises a heater body, engine comprising an engine body, an engine water tank body isfixedly arranged on the right side of the engine body; a water temperature sensor is mounted on the side wall of the right side of the engine water tank body in an embedded manner; an engine exhaustpipe is mounted at the bottom end of the interior of the engine body; the engine exhaust pipe is sleeved with a first heat preservation sleeve. The end, away from the engine body, of the engine exhaust pipe is fixedly connected with a tee joint. A waste gas valve is mounted at a left side port of the tee joint; the left side connecting part of the waste gas valve is fixedly connected with a wastegas pipe silencer; a first guide pipe is in threaded connection with a top through opening of the tee joint, a filter box is in threaded connection with the left end of the first guide pipe, clampinggroove plates are fixedly co