Do you need to turn on the AC when using the car air conditioner in summer?

[KateAnn]

In summer, you need to turn on the AC when using the car air conditioner. The AC button is the cooling switch of the car air conditioner. The car air conditioner adjusts and controls the temperature, humidity, air cleanliness, and air flow inside the car cabin to an optimal state, providing a comfortable riding environment for passengers and creating good working conditions for the driver. It is an important ventilation device that ensures safe driving. Things to note when using the air conditioner: 1. Choose an appropriate air conditioning temperature; 2. Do not immediately activate the internal circulation when entering the car in summer; 3. Use the air conditioner in a fully enclosed state; 4. Do not adjust the air outlet direction arbitrarily; 5. Do not keep the air conditioner on for too long; 6. Do not rest or sleep for long periods in a parked car with the air conditioner running.

[ODerek]

In summer, turning on the AC is essential for cooling. When I first bought my car, I didn't understand this. Once on a hot day, I only turned on the fan, which blew hot air, leaving me sweating profusely and the windshield completely fogged up. Later, I learned that the AC button controls the compressor, the heart of the air conditioning system. Now, every time I get in the car, I first open the windows to ventilate for a few minutes, wait for the hot air to dissipate, then close the windows and press the AC button, setting the temperature to around 23 degrees for optimal comfort. A special reminder: during humid weather, it's even more important to turn on the AC as it also dehumidifies and prevents fogging. Lastly, remember to clean the AC filter during maintenance, as neglecting this can degrade cooling performance—this is very important.

[MacJaxon]

Of course, you should turn on the AC! Last summer during a heatwave, I forgot to turn it on once—it was 35°C outside but felt over 40°C inside the car, and the steering wheel was scorching hot. The air conditioning system has two parts: the air blown in through the vents and the air cooled by the compressor. Not pressing the AC button is like just turning on a fan—it won’t cool the car at all. A useful trick is to use recirculation mode for faster cooling, then switch to fresh air mode once the temperature drops. If the car has been parked under the sun for a long time, don’t blast the AC immediately after starting—let the fan run for half a minute first before pressing AC to reduce engine load.

[JulietDella]

You must turn on the AC button. I remember last summer when I was driving my child to school, I thought just increasing the fan speed would be enough, but my child's school uniform ended up completely soaked. Later, a friend at the auto repair shop told me that the compressor wasn't running, so the air inside the car couldn't cool down. Using the AC for short trips might slightly affect fuel consumption, but health is more important on hot days. I usually set it to 25 degrees in auto mode, which keeps the car stable and energy-efficient. Also, I recommend parking in the shade so you won't be hit by a wave of heat when you get in the car.