Is It Harmful to Run the Car Air Conditioner for Two Hours While Idling?

[MacEvangeline]

It causes some damage to the car, but the impact won't be too significant. However, the greatest harm is to humans. Here are the specific reasons: 1. It causes some wear to the engine, potentially requiring earlier oil changes and maintenance. 2. Fuel consumption will increase, and engine carbon deposits will also accumulate. The most severe harm is to humans. In a stationary state, the air inside the car cannot circulate properly. If the windows are closed, people may feel comfortable and fall asleep, unknowingly suffering from oxygen deprivation and poisoning. According to human health requirements: the CO2 content in the air should not exceed 0.1%, and the O2 content should be maintained between 18~20.7%. Therefore, each person requires 20~25 cubic meters of fresh air per hour. Considering the limited conditions in a car, the minimum requirement for fresh air is 11 cubic meters per hour. The damage to the car is minor, but it poses a threat to human life.