Does opening windows while sleeping in the car with AC on have any impact?
1 Answers
Opening windows while sleeping in the car with AC on does not have any impact, and it is also recommended to open windows for ventilation when sleeping in the car with AC on. When the car engine is running, if the gasoline in the cylinders does not burn completely, it produces high concentrations of carbon monoxide. While the car is moving, the air creates convection through the AC system, keeping the carbon monoxide concentration inside the car very low, so occupants won't feel anything. However, when the car is stationary with the AC still running and all doors and windows closed, the air inside the car cannot circulate. The carbon monoxide emitted by the engine can leak into the car and gradually accumulate, increasing its concentration, which can eventually lead to poisoning or even death of the occupants. Therefore, if you choose to rest in the car for an extended period, you should open both side windows slightly to allow ventilation, ensuring that carbon monoxide does not accumulate inside the car and maintaining a certain oxygen concentration. Additionally, avoid sleeping too deeply while resting in the car; it's best to set an alarm to wake up periodically. More importantly, do not use the AC in recirculation mode; allow the air inside the car to circulate with the outside air for safety. If the outdoor wind is strong, positioning the car with the front facing the wind can help direct exhaust gases away from the car, reducing the chance of exhaust entering the car and lowering the risk.
