What Causes Low Airflow from Car AC Vents?
2 Answers
Low airflow from car AC vents may be caused by incorrect air direction settings. Below are details regarding low airflow from car AC vents: 1. Specific causes: Incorrect air direction settings, a faulty blower motor can result in reduced airflow, and a dirty cabin air filter can obstruct airflow. 2. Solutions for low airflow from car AC vents: Owners can regularly clean the cabin air filter by using a vacuum to remove dust from the filter or an air compressor gun. If the filter is excessively dirty, it is recommended to replace it. Cabin air filters are not expensive, and the replacement interval is typically every 10,000 kilometers or six months.
Last time I drove long distance, the air conditioning airflow kept getting weaker until the car felt like a steaming sauna. At first I thought it was just a settings issue, but adjusting the fan speed and switching between recirculation modes didn’t help. After stopping to check, I found the AC filter clogged with dust and debris, almost completely blocking the air intake. A quick clean immediately improved ventilation. If the filter is too old, replace it promptly—usually done during routine maintenance. It could also be a faulty blower motor or worn-out motor slowing down, requiring a visit to the repair shop. Another common issue is blocked air ducts by small leaves or debris, especially if neglected for long. Low refrigerant levels can also weaken overall AC performance and airflow. In short, don’t panic—start with the simple filter check, and prioritize cleaning during summer.