What is the correct way to use the AC button?
4 Answers
The correct way to use the AC button is: the AC button in the car can only be turned on when the air conditioning is in cooling mode. AC stands for air conditioning. After turning on the AC button in the car, the air conditioning compressor will achieve cooling through different rotation modes. Since the heating system of the air conditioning is supplied by the heat generated by the engine, the AC button only has the function of cooling. When using the air conditioning on hot days, remember to turn on the AC button in the car; otherwise, the cooling function will not work. After the air conditioning compressor starts, the engine load will increase, the car's power may slightly decrease, and fuel consumption will rise because the engine supplies power to the compressor.
Having driven for several years, I’ve learned the proper use of the AC button mainly involves activating cooling and energy-saving settings. Typically, after the engine starts, pressing the AC button engages the air conditioning compressor, which turns on the cooling function. On hot summer days, I do this first, then adjust the temperature knob to a comfortable level—around 24°C, for example—while controlling the fan speed. Too high a fan speed can be noisy, while too low may slow down cooling. Don’t forget to switch to recirculation mode during prolonged stops or traffic jams to avoid inhaling exhaust fumes or dust, which also improves cooling efficiency. In winter, I turn off the AC to save fuel unless the windshield fogs up—then turning it on helps dehumidify and defog. Regular maintenance is also key, such as checking the system quarterly to prevent refrigerant leaks that could impair cooling. Proper care extends the AC’s lifespan. Remember, never press the AC button when the engine is off to avoid draining the battery or damaging the compressor.
Using the AC button is quite straightforward: after starting the car, I press it to activate the cooling mode. This operation is common in hot weather, such as when the outdoor temperature is high, to quickly cool down the car. However, I need to be careful not to overuse it; for short trips, if unnecessary, turning off the AC saves fuel and reduces emissions, helping protect the environment. Adjusting the fan speed is also important—avoid setting it too high, as this increases the compressor's workload and fuel consumption. The recirculation mode is particularly useful in city traffic jams, as it helps filter the air. I usually check the circulation mode when I get in the car. Turning off the AC in cold weather is standard practice, but it’s still necessary to use it for defogging to remove humidity. Regularly cleaning the AC filter prevents odors—I perform simple maintenance monthly to ensure the system runs smoothly. In short, rational use extends the equipment's lifespan and is more economical.
Pressing the AC button is the standard method to turn on cooling: After starting the engine, I press the button to activate the compressor. This cools the car quickly in hot weather, while adjusting the temperature and fan. I prefer setting the fan to medium speed to avoid discomfort from strong airflow. The recirculation mode is useful in traffic jams, making cooling more efficient with windows closed; on highways, switching to fresh air mode prevents stuffiness. In cold weather, turning off the AC saves fuel. Simply put, adjust flexibly based on weather and needs—for example, turning it off for short trips saves energy. For maintenance, check the system every six months to prevent leaks or malfunctions, ensuring long-term reliability.
