How is it that the warm air runs hot and the parking is not hot?

It is normal for warm air to run hot and stop heating. After the vehicle stops running, the water in the heater box will not circulate. When the blower is turned on, the warm air tank will be cooled quickly and hot air will be available. Because the warm air can only be used normally when the engine is running and the water temperature reaches the midline, it is certainly not hot when parking. In winter, many car owners turn on the warm air as soon as they get on the bus, which is actually wrong, because the warm air only works when the water temperature in the water tank rises. When the cold car is started, the warm air is turned on, which will not only get the effect of warm air, but also increase the load of the engine, which is a kind of harm to the engine. It is suggested that when the cold car starts, idle for 3-5 minutes first, and then turn on the warm air after the water temperature of the car rises. The wind blown out in this way is also very warm and will not damage the engine. Million car purchase subsidy