Does starting the car and turning on the AC without moving harm the vehicle?

[SanAxel]

Starting the car and turning on the AC without moving can harm the vehicle for the following reasons: 1. If the car is idling just to run the AC, it can cause damage to the vehicle, and this practice is not recommended. Idling with the AC on can lead to carbon buildup in the engine, damaging it and shortening the maintenance cycle of the car's engine. 2. Running the AC immediately after starting the car without moving can also cause harm. When the car is first started, the exhaust pipe may emit a large amount of black smoke. This is mainly because, during a cold start, the engine has not reached its optimal operating temperature, leading to incomplete combustion and prolonged idling, which can easily result in carbon buildup over time.