Is It Okay to Run the Car Air Conditioner While Idling?

[VonKeegan]

Running the air conditioner for extended periods while the car is idling is definitely harmful. Starting the air conditioner during idle operation increases fuel consumption and accelerates engine carbon buildup. The greatest danger is to humans—when the car is stationary, the air inside does not circulate properly. If the windows are closed, people may feel comfortable and fall asleep, unknowingly risking carbon monoxide poisoning or oxygen deprivation. Common misconceptions about car air conditioner usage: 1. Higher AC settings consume more fuel: Over time, car air conditioners accumulate dust and dirt, which can lead to mold growth. If the airflow is consistently set too low, it becomes difficult to expel accumulated dust and contaminants from the vents, potentially harming passengers' health. 2. Setting the AC too low: Prolonged exposure to excessively cold temperatures can cause various discomforts, such as leg pain, general fatigue, chills, headaches, sore throat, abdominal pain, backache, and nerve pain in the limbs. 3. Keeping the recirculation mode on for too long: Extended use of the internal air circulation mode leads to stale air and reduced oxygen levels inside the car, potentially causing dizziness or even hypoxia among passengers.