What does MAX AC mean on a car's air conditioning?

[OColin]

Actually, MAX-AC in a car refers to the maximum cooling mode (MAX means "maximum," and AC is the compressor cooling switch). Of course, besides MAX-AC, there are other variations like AC-MAX. When this button is pressed, the car's air conditioning system will activate the maximum cooling mode, and the air conditioning compressor will operate at full capacity. Relevant information is as follows: 1. Principle of car AC cooling: When the AC switch is turned on, the clutch inside the air conditioning compressor engages, and the compressor is driven by the engine crankshaft via a belt. The refrigerant inside the air conditioning system is compressed by the compressor, transforming the low-temperature, low-pressure refrigerant into a high-temperature, high-pressure gas. This gas is then liquefied and cooled by the condenser, converting it back into a low-temperature, low-pressure refrigerant, which flows to the evaporator. When hot air passes through the evaporator under the action of the blower, the low-temperature, low-pressure refrigerant absorbs heat from the surrounding air, turning the hot air into cold air before it is blown into the car. 2. Air conditioning: MAX AC in a car activates the maximum cooling mode of the air conditioning. A/C stands for air conditioning, which can be understood as air control or air regulation. Its function in a car is to act as the air conditioning cooling switch.