How to Turn on the Heater with AC in a Car?
2 Answers
First, turn the temperature adjustment knob to the red zone - the closer to the end, the higher the temperature. Then, adjust the fan speed knob to your desired level. Additional information: 1. The car's heating and cooling system uses a single knob with directional selection for hot and cold air. Turning left activates cold air (indicated by a green mark), while turning right activates hot air (indicated by a red mark). The direction of rotation is crucial during operation. When the temperature knob is adjusted to the heating zone, warm air will be felt. 2. If the external circulation is activated, slight airflow may be detected from the air conditioning ducts when windows or sunroof are opened while the vehicle is in motion.
To turn on the car's heating system, it's actually not complicated. After years of driving, here's my usual procedure: After starting the car, the engine needs to warm up for a few minutes to generate heat. Then locate the temperature knob on the dashboard—usually marked with red and blue indicators—and turn it toward the red side, or set a numerical value higher than the current temperature. This will automatically activate the heating without pressing the AC button, as AC engages the compressor for cooling. The heating comes from the engine's warm air system, similar to a heater. If your car has an automatic climate control system, press the AUTO button and then adjust the temperature knob to your desired setting—the system will automatically regulate airflow and heat output. You can manually fine-tune the fan speed and direction; for example, increasing the fan speed can distribute warm air more quickly. Remember, during winter operation, ensure the system is functioning properly by checking that the coolant level is adequate.
