Should the car air conditioner blue setting be turned all the way to the end?

[DiStella]

Turn on the A/C switch and adjust it to the blue area; there is no need to turn it all the way to the end. Correct usage of car air conditioning: 1. Air conditioning zone division Generally, blue buttons in cars represent cold air, red buttons represent warm air, and the middle represents moderate temperature. 2. Adjustment positions To turn on cold air, adjust the left button to the blue area. When warm air is needed, adjust it to the red area and press the A/C switch. Additionally, the middle button controls the fan speed, and the rightmost button adjusts the mode, allowing you to direct air to the feet, hands, or windshield, or use two modes simultaneously. The white line adjusts the temperature. If it feels too warm, adjust it to the middle. To turn off the air conditioning without using it, simply turn off the middle fan.