How Often Should the Car's Cabin Air Filter Be Replaced?
2 Answers
Cabin air filters are generally replaced every 10,000 to 20,000 kilometers or every 1 to 2 years. Functions of the cabin air filter: • Ensures the filter fits tightly against the housing, preventing unfiltered air from entering the cabin. • Separates solid impurities such as dust, pollen, and abrasive particles from the air. • Adsorbs moisture, soot, ozone, odors, carbon oxides, SO2, CO2, etc., with strong and long-lasting moisture absorption. • Prevents condensation on car windows, ensuring clear visibility and driving safety for passengers. • Provides fresh air to the cabin, preventing occupants from inhaling harmful gases and ensuring driving safety. • Effectively sterilizes and deodorizes. Precautions for replacing the cabin air filter: • Purchase cabin air filters from reputable manufacturers. • Always turn off the car engine before replacing the filter. • Pay attention to the installation direction of the filter to avoid installing it backward.
I find that the replacement frequency of the car's cabin air filter is crucial, as it directly impacts in-cabin air quality and personal health. Therefore, I recommend changing it every six months to a year. Especially before pollen season or during flu outbreaks, replacing it in advance can help prevent allergies and bacterial growth. If you frequently drive in dusty construction sites or polluted urban areas, the filter can easily clog, affecting airflow and causing unpleasant odors or breathing discomfort—in such cases, checking it every six months is advisable. I usually have the maintenance shop inspect the filter during routine servicing or opt for a DIY replacement kit, which is simple and cost-effective—for example, some models allow easy access by opening the glove compartment. Keeping the filter clean not only enhances driving comfort but also extends the AC system's lifespan, preventing additional expenses and health risks from potential malfunctions. Never overlook this—take timely action to maintain a fresher and safer in-cabin environment.
