Can You Keep the Air Conditioning On While Parked?

1 Answers
Norma
07/30/25 12:28am
You should not keep the air conditioning on while parked. Carbon Monoxide: When the car's engine is running, incomplete combustion of gasoline in the cylinders can produce high concentrations of carbon monoxide. While driving, the air flow generated by the air conditioning system creates convection, keeping the carbon monoxide concentration inside the car low. Causes Poisoning: However, when the car is parked with the air conditioning still on and the windows and doors are closed, the air inside cannot circulate. If carbon monoxide from the engine leaks into the car, it can gradually accumulate, increasing its concentration and leading to poisoning or even death. Garage Sealing: When using the air conditioning, if you park the car in a garage and take a nap with the air conditioning on, even with the windows open, it can still be dangerous. This is because a garage is a relatively sealed environment, and high concentrations of carbon monoxide can still occur, leading to carbon monoxide poisoning.
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