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Why do you turn on the air conditioner in winter?

The first point is not to turn on the heater as soon as you get on the bus, because the heater uses the water temperature of the engine. When the vehicle just caught fire, the engine water temperature was low. At this time, warm air will not only blow in cold air, but also increase the engine load and affect the water temperature rise. We try to wait until the water temperature rises to 60-80℃ before turning on the warm air.

Secondly, don't turn on the AC switch, remember not to turn it on. As shown below, the air conditioner is turned to the red area and the warm air comes out. The left internal circulation is turned on, and the car warms up quickly. After the temperature inside the car comes up, it can also be changed to external circulation. When using air-conditioning heater in winter, A/C lamp not only does not help heating, but will cause unnecessary power loss because of the operation of compressor. Therefore, when the air-conditioning heater is used in winter in the north, its A/C can be completely turned off, which will not have any impact on the air-conditioning heater. But the above method is suitable for dry and cold winter in the north, not for wet and cold winter in the south. It is necessary to start A/C to dehumidify the air and then mix the hot air to avoid fogging the glass inside the car.