Does idling with the AC on harm the car?

[BrielleLynn]

Idling with the AC on is not a problem, with the biggest impact being fuel consumption, followed by waste. 1. When driving with the AC on, the power output consumed by the AC only accounts for a very small part of the engine's idle energy. 2. When idling with the AC on, the engine not only drives the AC compressor but also needs to maintain the normal operation of the power steering and brake booster pumps. The latter two functions are completely unnecessary when parked, so keeping them running is simply a waste of power. Idling with the AC on while stationary can cause harm or even death to occupants if not careful, due to: 1. At idle, even outdoors, if there is no wind, carbon monoxide can accumulate around the car, with the concentration increasing over time. 2. If the car is set to external air circulation, a large amount of carbon monoxide from outside could be drawn into the car, leading to carbon monoxide poisoning.