When the air conditioner knob is turned to the hot windshield, the switch between the warm air tank and the coolant channel will be turned on, and part of the coolant will circulate through the warm air tank to heat the blades of the water tank, then the fan will be turned on, and the warm air fan will blow hot air into the car.
Cold air works by compressing refrigerant through a compressor-its working principle is suitable for air conditioners and refrigerators at home.