The replacement cycle of car air conditioner filters needs to be flexibly adjusted based on factors such as driving environment, filter type, and frequency of use. Normally, It is best to replace them every 12 months or 10,000 to 20,000 kilometres. If the vehicle is operated in dusty, hazy, or humid environments for extended periods (such as coastal areas), the replacement interval should be reduced to 3 to 6 months or 5,000 to 8,000 kilometres. Activated carbon composite filters require replacement 1 to 2 months earlier due to their adsorption function, whereas HEPA high-efficiency filters, despite their superior filtration performance, should be replaced every 8 to 10 months to prevent excessive airflow resistance. High-usage vehicles like taxis need replacement every 2 to 3 months, and immediate replacement is necessary when experiencing a 30% reduction in airflow, musty odors, or allergic reactions. During replacement, pay attention to the airflow direction indicator. The cost of DIY replacement is approximately 30 to 50 Malaysian Ringgit, while 4S shop service fees typically range from 100 to 150 Malaysian Ringgit. Car owners are advised to develop a customized replacement schedule by consulting the maintenance manual and assessing actual vehicle conditions.
