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What Are the Reasons for Low Airflow When the Car Air Conditioner Is Set to Maximum?

1 Answers

McGarrett

07/30/25 2:08am

If the airflow is relatively low when using the external circulation mode but normal in the internal circulation mode, it is likely caused by a clogged cabin air filter, which requires replacement. If the airflow remains low regardless of the circulation mode, it may involve issues such as internal air duct flaps. In such cases, it is recommended to first check the cabin air filter. During daily driving, it is important to maintain the air conditioning system by regularly replacing the cabin air filter. Bacteria can easily grow on the filter, leading to a musty odor in the air conditioning system. Additionally, the condenser should be cleaned periodically, and the radiator should be removed for thorough cleaning. When the air conditioner is in use, it draws in a lot of dust. Periodically setting the airflow to maximum can help blow out loose dust from the inner surfaces of the air ducts, which is a simple method to keep the air conditioning system clean. During the first use of the air conditioner in summer, it is advisable to inspect the air conditioning system, such as checking the refrigerant level via the reservoir, whether the cabin air filter is excessively dirty, and if there are any foreign objects in the radiator.

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