You can turn on the external circulation mode to let the air outside the car convection into the car. At this time, the car will not feel the wind when it is stationary, but when it is driving, it will blow out the air outside the car through the air-conditioning outlet, and this oncoming wind will pass through the engine compartment and bring the heat of the engine cooling system and exhaust system into the car from the air-conditioning distribution box. Because there will be air pressure, it will blow in from the air conditioner outlet.
Matters needing attention in automobile heating
Turning on the heating as soon as the car starts will hurt the car, affect the life of the car engine and increase fuel consumption. Because the car has just started, the engine and water tank have not reached the ideal working temperature at this time. At this time, the heat is transferred to the car prematurely, which is equivalent to the car constantly providing more heat to the engine and water tank, and the fuel consumption will naturally increase at this time.
Correct operation mode: let the engine and water tank reach the ideal working temperature first, and generally turn on the warm air after starting the car for 5 minutes, so that the hot air is strong, stable and lasting, and will not lead to an increase in fuel consumption.