Does idling with the AC on damage the car?

[MacAndrew]

Idling with the AC on is a normal operating condition during vehicle use. Automobiles are designed and manufactured to account for various usage scenarios, so this practice does not cause significant harm but rather constitutes normal wear. However, there are several potential hazards of idling with the AC on: 1. Idling with the AC on produces more harmful exhaust emissions compared to driving with the AC on, as idling represents the most challenging engine operating condition where gasoline combustion is relatively incomplete, resulting in higher emissions of carbon monoxide, hydrocarbons, nitrogen oxides, and other harmful gases. 2. If not properly managed, idling with the AC on can cause harm or even fatalities to vehicle occupants. There are two main risks: oxygen deprivation/asphyxiation and carbon monoxide poisoning. When idling with the AC on, always park in an open area and never remain in the vehicle for extended periods in enclosed spaces, as exhaust fumes containing carbon monoxide can enter the cabin and easily lead to carbon monoxide poisoning.