Does idling with the air conditioning on affect the car?

[Aragorn]

Idling with the air conditioning on has a slight impact on the car's engine, as it can lead to carbon buildup, causing the exhaust pipe tailpipe to accumulate carbon deposits, and it also increases fuel consumption. Although idling with the air conditioning on does not cause significant harm to the car, it is recommended to minimize such situations whenever possible. Below is some relevant information about car air conditioning: 1. Principle of car air conditioning heating: When heating, the high-temperature antifreeze from the engine enters the heater core. At this time, the air blown by the blower may also pass through the heater core, allowing warm air to be blown out from the car air conditioning vents. 2. Refrigerant: Car air conditioning requires regular refrigerant replenishment. If refrigerant is not added for a long time, it can slow down the cooling speed and reduce the cooling efficiency. Most car air conditioning systems use R134a refrigerant.