A parking heater is an in car heating device that is independent of the car engine and has its own fuel pipelines, circuits, combustion heating devices, and control devices. This type of heater can preheat and warm up the engine and cab of a car parked in low temperature and cold winter environments without starting the engine, thereby completely eliminating cold start wear of the car. There are two main working principles of parking heaters: liquid cooling circulation system and air heating system. The liquid cooling circulation system is connected to the vehicle’s cooling system and utilizes the vehicle’s thermal coolant to generate heat; The air heating system uses an independent heat source, such as fuel or diesel, to generate heat through combustion, and then sends hot air into the car through a fan to provide warmth. Parking heaters are not only suitable for passenger and household use, but are also widely used in scenarios with heating needs such as trucks, ships, camping sites, etc., especially in cold winter or at night. Además, there are various types of parking heaters, including liquid cooled circulating heaters and air heaters, classified according to different energy sources and working principles. Choosing a parking heater that suits your vehicle and needs is crucial to ensure a warm driving experience in the cold winter.