How to distinguish the front and back of the air conditioning filter in a car?

1 Answers
LandonRose
07/29/25 7:29pm
Methods to distinguish the front and back of the car air conditioning filter: The arrow on the car air conditioning filter pointing upward indicates the front side. The direction of the arrow on the air conditioning filter specifies the front and back sides, with the arrow indicating the airflow direction, which is also the installation direction. The front side should face the airflow direction during installation. You can also determine the front and back by observing the surface of the air filter. The ordinary fuzzy side is the front, while the side with a support line structure is the back. For filters containing activated carbon, the black side is the front, and the white side is the back. Replacement cycle of the air conditioning filter: The replacement cycle of a car air conditioning filter depends on individual usage, external environment, and seasonal climate. For urban household cars, it is recommended to replace the filter every 10,000 to 20,000 kilometers or about once a year. If the driving environment is poor with more dust, the filter tends to get dirty faster, and the replacement cycle should be shortened accordingly. The frequency of air conditioning use varies by season, affecting the replacement cycle. During summer and autumn when air conditioning is used less, the replacement cycle can be slightly longer.
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