Can Sleeping in a Car with Air Conditioning on in Summer Be Fatal?

1 Answers
McParker
07/29/25 7:34pm
Cars are enclosed spaces, and sleeping in an enclosed space can lead to carbon monoxide poisoning and potentially fatal outcomes. Below is some information about sleeping in a car with the air conditioning on: Safety Hazards: When a car is stationary, the exhaust fumes produced do not dissipate as they would while driving, and can be drawn into the car by the air conditioning system, leading to carbon monoxide poisoning. Additionally, if a car remains closed for an extended period, the oxygen level inside gradually decreases, which can cause suffocation and death while sleeping. Therefore, sleeping in a car with the air conditioning on is unsafe. Precautions: If you must sleep in a car, it is advisable to use the air conditioning in external circulation mode, which draws fresh air from outside into the car, helping to maintain air circulation inside.
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