Does the car air conditioner heating consume fuel?

[Thaddeus]

Using the car air conditioner for heating does not consume additional fuel. Here is an introduction to the car ventilation system: Working modes of the ventilation system: The ventilation system is divided into two types: internal circulation and external circulation. The external circulation air intake is outside the car, using a fan to draw outside air into the car, while the internal circulation air intake is inside the car, cutting off the airflow between the inside and outside. Usage scenarios for external and internal circulation: When the outside air quality is good, you can open the external circulation for ventilation. If you encounter congested road sections or are in a tunnel with poor air quality, you can close the external circulation and turn on the internal circulation.