What Causes Weak Airflow from Car Air Conditioning?
2 Answers
Weak airflow from car air conditioning can be caused by the following reasons: 1. Incorrect air direction selection: If the air direction is set to blow towards the front windshield or side windows, the airflow entering the cabin will feel weak. 2. Blower motor malfunction: If the blower motor experiences a short circuit or reduced power, the airflow from the car air conditioning will decrease. In this case, it is recommended to visit a 4S shop or professional repair shop for inspection. 3. Dirty cabin air filter: This can obstruct the airflow. The cabin air filter is designed to filter impurities from the air entering the cabin. If too many impurities accumulate, it will affect the airflow from the vents.
Last time I drove, the air conditioning airflow was pitifully weak, and the cold air couldn't even reach my face. It turned out the cabin air filter was completely clogged. I usually like to take care of my car myself, so I opened the glove compartment and took out the filter—it was full of dust and leaves, probably from parking under trees. Replacing it with a new filter solved the problem, but if the filter wasn't the issue, I'd have to check whether the blower speed switch was stuck or if there was an electrical problem. An aging blower motor could also cause weak airflow, or the condenser might be frozen and blocking the air ducts. Try to avoid parking under trees often, and just replace the filter once a year. Ignoring this issue for too long can drastically reduce AC efficiency, making the car feel sluggish and increasing fuel consumption. I recommend checking it early to avoid sweating like in a sauna during summer.
