Does idling with the AC on harm the engine?

[AmirLee]

Using the AC while idling for a short period will not harm the engine; however, prolonged idling with the AC on can lead to increased carbon deposits in the engine. To activate the car's air conditioning for cooling, you need to press the AC button, which engages the compressor clutch, causing the engine to drive the compressor. The compressor continuously compresses the refrigerant and delivers it to the evaporator, where the refrigerant expands and absorbs heat, thereby cooling the evaporator. The cooled evaporator then cools the air blown by the blower, allowing the AC vents to release cold air.