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

[StVictoria]

In summer, turning on the AC switch is definitely necessary when using the car's cold air, otherwise the air conditioning system is just the blower working, delivering air at normal temperature. During hot summers, when the AC button is turned on, the temperature control should be adjusted to the blue position. For automatic air conditioning, a temperature can be set, and then the AUTO button can be pressed, allowing the automatic air conditioning to adjust the interior temperature automatically. Below is some information about car air conditioning AC: 1. The car air conditioning AC is the switch for the compressor, which delivers cold air. The car air conditioning system includes not only the compressor but also the condenser, evaporator, expansion valve, etc. The compressor is one of the most important components of the refrigeration system, responsible for compressing and delivering refrigerant vapor. 2. Generally, you should first turn on the blower, set the air volume to maximum, and start with the external circulation to draw out the hot air inside the car. Then, turn on the AC for cooling. After about two minutes, you can switch to internal circulation, and the car will soon become cool. Once the interior is cool, you can temporarily turn off the AC. If it gets warm again, turn the AC back on. This method of using the air conditioning saves fuel.

[LunaLynn]

Of course, you should use the AC when driving in summer because AC stands for the air conditioning's cooling mode, which is responsible for blowing out cold air. When driving in temperatures above 30 degrees Celsius, with scorching heat outside, not turning on the AC inside the car feels like being in a steamer—sweating nonstop is just unbearable. I often commute by car and have a habit of opening the windows for a few minutes after getting in to let the hot air out, then closing the windows and pressing the AC button, setting the temperature to around 24 degrees. It cools down quickly. Remember, using the recirculation mode can speed up cooling and save energy. Also, avoid setting the temperature too low, as it can easily lead to catching a cold, and large temperature differences aren’t good for your health. Regularly check and clean the AC filter; otherwise, dust buildup can reduce efficiency. This trick can extend the system's lifespan and keep the air fresh. In short, without the AC, the system is just a fan and can’t cool the car at all. Using it correctly in summer ensures comfort and safety.

[VanDante]

In summer, turning on the AC mode is essential for cooling when driving with air conditioning. Every time I drive under the scorching sun, I activate the AC; otherwise, the car's interior temperature can soar above 40 degrees, posing a high risk of heatstroke while driving. From a fuel-saving perspective, using the AC does increase fuel consumption by about 10%, but for the sake of comfort and safety, I find it worthwhile. I set the temperature between 22-25 degrees, avoiding excessively low settings to save fuel. Additionally, I make sure to open the windows to vent hot air before starting the AC, which helps cool the car quickly and avoids wasting electricity. Using the recirculation mode is also effective for energy conservation, especially during traffic jams. Regular maintenance is crucial—I recommend cleaning the AC filter every six months to prevent odor buildup and maintain air quality. Ignoring the AC and relying solely on the fan draws in hot air, increasing cabin humidity and making it stuffier, which can lead to driver fatigue on long trips. Addressing issues promptly ensures safe driving.

[LeElijah]

In summer, when driving with the air conditioning on, you must press the AC button, which is responsible for cooling. If you don't turn it on, the air conditioning will blow hot air like a fan, making the car stuffy and humid. I usually open the windows for a few minutes to ventilate and expel the hot air before closing them, then start the AC and set it to around 24 degrees. Using the recirculation mode speeds up cooling, making it comfortable quickly. Also, pay attention to maintenance by regularly replacing the filter to prevent clogging. The AC's dehumidification effect is also good, avoiding fogged windows that can obstruct visibility.