Should the AC be turned on for heating?
2 Answers
Heating does not require turning on the AC. The AC button in a car controls the compressor's switch, while heating primarily utilizes the internal heat circulation of the car to maintain the cabin temperature. During this process, the compressor does not operate, and you only need to adjust the airflow volume. Turning on the AC button may lead to unnecessary fuel consumption. Winter heating usage tips: Do not use heating immediately after a cold start: When the car is started cold, the temperature inside the radiator is relatively low. Turning on the heating at this time will not only fail to raise the cabin temperature but also increase the engine's load, slowing down the engine's temperature rise and affecting normal operation. It will also increase fuel consumption. It is recommended to wait 8 to 15 minutes after starting the car before turning on the heating.
Generally, you don't need to turn on the AC button when using the heater in winter. After driving for over ten years, I've found that the warm air is heated by the engine's heat. Turning on the AC will only make the compressor work unnecessarily, wasting fuel. For example, on very cold days, simply adjust the temperature to the heat setting. Only if the windows fog up badly should you temporarily turn on the AC for dehumidification. Remember to check if the blower is working properly to prevent the air inside from becoming too dry, which can affect comfort. Overall, don't complicate simple things—save fuel and hassle.
