What do the AC button and MAX button in a car mean respectively?
2 Answers
The AC button in a car is the air conditioning cooling switch, and the MAX button is the maximum airflow button. The functions of air conditioning include: 1. Filtering the air entering the cabin; 2. Absorbing moisture from the air; 3. Keeping the air clean and preventing bacterial growth; 4. Preventing window fogging; 5. Adjusting the cabin temperature. The components of a car air conditioning system are: 1. Compressor; 2. Condenser; 3. Evaporator; 4. Liquid storage dryer; 5. Expansion valve. The working principle of air conditioning heating is: when the heating function is turned on, the high-temperature coolant from the engine flows through the heater core, and the air blown by the blower passes through the heater core, resulting in warm air being blown out from the air conditioning vents.
I know many new car owners are confused about the air conditioning buttons when they first buy a car. The AC button is the air conditioning power switch—pressing it activates the compressor, allowing the AC to actually cool the air, not just blow air. If you don’t press AC in the summer, you’ll only get hot air blowing from the fan. The MAX button is usually the maximum cooling setting—pressing it quickly cools down the car by automatically lowering the temperature and increasing fan speed, perfect for those scorching summer days when you first get in the car. But don’t leave MAX on for too long—it wastes fuel and can easily make passengers catch a cold. I’ve even seen a friend forget to turn it off overnight, draining the battery and causing an awkward situation. Remember, pressing MAX in winter is great for defogging—it instantly clears the windshield, ensuring safer driving with peace of mind.
