The turbine air duct has a uniform wind speed and a large volume of air .. It has a large outlet for air flow, which improves heat efficiency, and air volume is greater, and distanceof the air supply is large enough. Effectively reduce the noise through fan speed control, silent fan, silent oil pump, and also with silencer.The silent fan sleeps calmly, and the dosing oil pump adopts an improved low frequency pulse with low vibration. The optimized frequency conversion ECU precisely controls the injection frequency of the oil pump, and controls the amount of admission air with the precise speed to extend the life of the heater With a complete assembly kit - including all mounting screws, which means that the entire installation kit and instructions are included.Facilitating installation and use. This diesel air heater can be applied to heat the cabin of several diesel mechanical vehicles, such as cars., Buses, RVS, trucks, engineering vehicles, etc.