The replacement frequency of an automobile air conditioning filter depends on the actual usage environment and vehicle conditions. It is generally recommended to replace it every 10,000 to 20,000 kilometers or every 1 to 2 years. If the vehicle is frequently driven in areas with heavy dust or poor air quality, the replacement interval can be shortened to every six months or 3 months. For example, the maintenance manual for the Honda Civic recommends replacement every 1 year or 20,000 kilometers, while the Audi A4L's manual suggests every 30,000 kilometers. When replacing, pay attention to the orientation of the filter, ensuring the arrow mark aligns with the airflow direction to prevent reduced filtration efficiency due to incorrect installation. The air conditioning filter is typically located inside the passenger-side glove box or in the engine compartment, making it relatively simple to replace yourself. Products from reputable manufacturers usually cost under 100 Malaysian Ringgit. If the air conditioner's airflow weakens or emits unusual odors, it may indicate a clogged or moldy filter, which should be cleaned or replaced promptly. Regular maintenance not only enhances in-cabin air quality but also optimizes air conditioning performance and prolongs the system's lifespan.
