How to Turn on the Car Air Conditioner for Cold and Hot Air?

[LeCali]

Here are the methods to adjust the car air conditioner for cold and hot air: 1. There is a temperature adjustment knob on the car dashboard, with one side red and the other blue. Turning it all the way to the red side will produce hot air, while turning it all the way to the blue side will produce normal-temperature air. To get cold air, you also need to press the compressor magnetic (AC) switch to activate the cooling function. 2. Usually, first locate the temperature button. Above the temperature button, to cool, first turn on the AC switch and rotate towards the blue side to lower the temperature; for heating, there's no need to turn on the AC, just rotate towards the red side to increase the temperature. Gradually adjust the fan speed from 1 to 4. 3. Alternatively, press the AUTO mode, set the temperature, fan speed, and direction, and the system will automatically adjust the fan speed and temperature according to its built-in program.

[MacEverett]

Last time I drove my bestie's new car, I found the air conditioning adjustment super simple. After starting the car, just find the temperature knob on the center console—turning it all the way to the blue zone gives cold air, and all the way to the red zone gives hot air. Remember, in winter, you need to wait for the coolant temperature gauge to rise before getting warm air; turning on the AC directly just wastes fuel. Most new cars nowadays come with dual-zone climate control, allowing the driver and front passenger to set different temperatures. My old car still requires manually adjusting the fan speed—I recommend using recirculation mode in traffic to avoid inhaling exhaust fumes. On long drives, alternating between recirculation and fresh air modes helps prevent drowsiness. If you have automatic climate control, just press AUTO for the most hassle-free experience—the system balances temperature and humidity on its own.

[KarterLee]

Getting into a car that's been baking in the midday summer sun feels like stepping into a sauna. I used to immediately hit MAX A/C for rapid cooling. But it's actually better to first open the windows to ventilate before closing them and turning on the AC—this cools the car faster and saves energy. For heating, wait until the coolant reaches 90°C, otherwise you'll just get cold air. Some cars have a SYNC button on the AC panel—pressing it sets a uniform temperature throughout the car, which is very convenient. Cars modified with LCD screens can even control the AC via voice commands, though the recognition rate can sometimes be frustrating. Remember, when the windows fog up, turn on the AC for dehumidification rather than heating—cold air defogs much more efficiently. And if you're parked waiting for more than three minutes, remember to turn off the engine—sleeping with the AC on is particularly dangerous.

[VanElena]

Veteran drivers tell you, turn the AC knob to the left for cold air and to the right for warm air. Nowadays, new cars with automatic AC just need you to press AUTO, and the system takes care of temperature and airflow. Don't slack off—regularly clean the AC filter to avoid musty smells caused by clogs. The infotainment system can save your AC settings, so it automatically resumes your last temperature setting upon next startup. For hybrid cars, don't fret about battery usage when using electric AC—cool with electricity before the engine kicks in. Remote-starting the AC is a game-changer; cooling the car 15 minutes before entering in summer feels like heaven.