Can a Car Idle for a Long Time with the Air Conditioner On?

[VictoriaRose]

Keeping the air conditioner on while the car is idling after parking causes incomplete combustion of gasoline, as the engine only operates at idle speed. Unburned gasoline produces toxic substances such as carbon monoxide. If the car doors and windows remain tightly closed for a long time under these conditions, exhaust fumes can enter the sealed cabin. When these fumes accumulate to a certain level, they can cause carbon monoxide poisoning. The reasons for unpleasant odors in car air conditioners are as follows: 1. Dust accumulation in the indoor filter and copper fins: After prolonged use, dust builds up inside the indoor filter and copper fins. When this accumulation reaches a certain level, it produces odors that disperse into the air when the air conditioner is turned on. 2. Moisture inside the indoor unit: After cooling or heating, the indoor unit often retains moisture. If the air conditioner is turned off immediately without a drying or anti-mold function, the moisture remains inside, leading to mold growth over time and the natural development of musty odors.