Does idling with the air conditioning on for an hour damage the car?

[SanCole]

Idling with the air conditioning on for an hour does not damage the car, but the biggest impact is definitely fuel consumption. Carbon monoxide accumulation can easily lead to poisoning: When the car is stationary with the air conditioning on and the windows and doors are closed, the air inside the car cannot circulate. If carbon monoxide from the engine leaks into the car, it will gradually accumulate, increasing its concentration, which can lead to poisoning or even suffocation. Therefore, try not to turn on the air conditioning in poorly ventilated areas to avoid carbon monoxide buildup and oxygen deprivation. Carbon deposits formation: If the engine speed is too low, it may struggle to power the air conditioning, and even if it does, the engine may run unevenly, leading to incomplete combustion and the formation of carbon deposits. Additionally, idling with the air conditioning on can cause poor heat dissipation in the system, easily leading to overheating of the engine coolant. Overheating can severely damage the engine.