Is It Harmful to the Car to Start the Engine and Turn on the AC Without Moving?

[VanAmelia]

Starting the engine and turning on the AC without moving the car can cause some harm to the vehicle. When the car is first started, a large amount of black smoke may be emitted from the exhaust pipe. This is mainly because during a cold start, the engine has not reached its optimal operating temperature, leading to incomplete combustion and causing the car to idle. Prolonged idling can easily lead to carbon buildup. Below are the working principles of the AC button and precautions for using the car's air conditioning: Working Principles of the AC Button: When the AC button is pressed, the electromagnetic clutch of the air conditioning compressor engages, causing the compressor to operate. This then puts the car's air conditioning into a cooling state. Precautions for Using Car Air Conditioning: Avoid always using the recirculation mode. Although recirculation helps save fuel, prolonged use can make the air inside the cabin stale and oxygen-deprived. Regularly clean or replace the car's air conditioning filter and clean the air ducts to ensure good air quality from the AC system.