Why Can't You Turn on the Air Conditioning When the Car is Parked?

[McRicardo]

Here are the specific reasons why you shouldn't idle with the air conditioning on: High fuel consumption: Keeping the air conditioning on while idling after parking consumes a lot of fuel because the compressor relies on the engine's idle operation, which leads to incomplete combustion of gasoline and easily causes carbon buildup. Toxic substances production: Incompletely burned gasoline produces toxic substances such as carbon monoxide. With the car windows and doors tightly closed for a long time, exhaust fumes can enter the enclosed cabin. Accumulating to a certain level can cause carbon monoxide poisoning. Idling with the air conditioning on emits more harmful exhaust than driving with the air conditioning on. The idle condition produces relatively more harmful gases such as carbon monoxide, hydrocarbons, and nitrogen oxides.