Can You Get Carbon Monoxide Poisoning by Sleeping in a Car with the AC On?
2 Answers
Sleeping in a car with the AC on can lead to carbon monoxide poisoning, but sleeping in an electric vehicle with the AC on will not cause carbon monoxide poisoning. Additional information: 1. Idling: Carbon monoxide poisoning occurs because when the engine is running, if the fuel does not burn completely, it produces high concentrations of carbon monoxide. When the car is parked but the heater continues to operate and the windows are closed, the carbon monoxide emitted by the engine can accumulate and increase in concentration. Therefore, it is best not to sleep in the car when it is parked. 2. External circulation: Running the AC in a closed car can produce a large amount of carbon monoxide, and the concentration can exceed safe levels in just over 20 minutes. Staying in the car for too long can cause a noticeable feeling of suffocation. If the car is set to external circulation, carbon monoxide from outside the vehicle can be drawn into the car in large quantities, leading to carbon monoxide poisoning.
As someone concerned about public safety, I must emphasize the high risk of carbon monoxide poisoning when sleeping in a car with the air conditioning on. This is because when the air conditioning is running, the vehicle's engine typically remains operational to provide power, emitting exhaust fumes that contain high levels of carbon monoxide. In an enclosed environment, such as a garage, underground parking lot, or poorly ventilated corner, carbon monoxide can accumulate inside the vehicle, reaching lethal concentrations. This gas is colorless and odorless, causing drowsiness, unconsciousness, and eventually suffocation or even death. Real-life cases show multiple accidents annually, such as drivers resting in garages without opening windows. The air conditioning itself does not directly produce carbon monoxide, but the running engine is the root cause. I strongly advise against keeping the engine or air conditioning on in any enclosed area when parked. For napping, choose open-air locations and slightly open a window for ventilation—this is the safest approach. Never gamble with your life; if you find yourself in such a situation, exit the vehicle immediately for fresh air. Regularly inspecting your vehicle's exhaust system also helps reduce potential hazards.
