What does 'front' mean in car air conditioning?

[DeSebastian]

'Front' refers to the front part, and in the context of air conditioning, it means zoned temperature control, specifically for adjusting the temperature in the front of the cabin. It is the button that controls the air conditioning for the front seats. The method to turn off the car air conditioning is: turn the knob all the way to the left to shut it off; on the central control screen, there will be an air conditioning control interface with an 'off' button in the lower left corner—click it to turn off. The functions of car air conditioning are: to achieve a cooling effect through the continuous phase change cycle of the refrigerant; to remove dust, odors, smoke, and toxic gases from the air inside the car, making the cabin air fresher, and to humidify the cabin air, increasing its relative humidity. Precautions when using the air conditioning: Close all windows when the air conditioning is on: When the air conditioning is on, the cabin might feel a bit hot, prompting some to open the windows halfway to regulate the temperature. However, this increases the load on the air conditioning, leading to higher fuel consumption without necessarily achieving the best cooling effect. In such cases, simply adjust the air conditioning according to the actual situation. Opening the sunroof for ventilation might have the opposite effect. Do not turn on the air conditioning immediately after starting a car that has been parked for a long time: If the car has been parked for an extended period, the enclosed space can make the air inside stale and even produce unpleasant odors. Therefore, after entering the car, first turn on the external circulation to expel the stale air before turning on the air conditioning. This is especially important for cars parked under the sun for a long time—do not turn on the air conditioning immediately, as the high cabin temperature means the air conditioning will take longer to cool the hot air compared to simply opening the windows for natural ventilation. Alternatively, repeatedly opening and closing the doors can help expel the hot air. Switch between internal and external air circulation: As the name suggests, external circulation brings fresh outside air into the cabin while expelling the cabin air outside. If only internal circulation is used while driving, the cabin air cannot circulate properly, leading to unpleasant odors and, in severe cases, causing passengers to feel nauseous or carsick. Always turn off the A/C button before shutting off the engine: The A/C button controls the air conditioning compressor and cooling function. Using the air conditioning generates moisture, and combined with the engine's heat, this can lead to odors in the air conditioning ducts over time. If the A/C button is left on when the car is turned off, the air conditioning will automatically expel these odors into the cabin upon startup, immediately affecting passenger comfort. Additionally, turning on the air conditioning right after starting the engine places a heavy load on it, especially if the car has been parked for a long time, as the temperature difference between the cabin and outside can be significant. Doing this frequently can shorten the engine's lifespan. Temporarily turn off the air conditioning during high-speed overtaking: The air conditioning's power level corresponds to the load it places on the engine. Thus, using the air conditioning increases fuel consumption and reduces engine performance. Temporarily turning it off during high-speed overtaking can prevent potential dangers caused by reduced engine power.