Do you need to press the AC button when using the air conditioner in summer?

[RicardoMarie]

In summer, you need to press the AC button when using the air conditioner, as the AC button is the cooling switch for the car's air conditioning system. When the AC button is turned on, the engine drives the air conditioning compressor to work. The compressor cools the hot air from outside, allowing cool air to blow out from the vents. Additionally, since the engine has to power the air conditioning compressor when AC is on, the engine's load increases, leading to higher fuel consumption. If the AC button is not pressed in summer, the hot air from outside will not be cooled by the compressor and will blow in at a high temperature, failing to achieve the cooling effect. Instead, it will make the interior feel hotter.