The maintenance of air conditioner filters is crucial for the air conditioning units, as it directly impacts the cleanliness of indoor air. Therefore, proper daily maintenance of air conditioner filters is a key part of central air conditioning unit maintenance and care.

For initial and medium-efficiency air conditioner filters, we should aim to clean them at least once a month. If there is a significant amount of dust, the cleaning cycle should be shortened. High-efficiency air conditioner filters should be replaced as per cleaning requirements.

2. When cleaning air conditioning filters, use lukewarm water below 40 degrees Celsius. Avoid scrubbing during the cleaning process. For heavily soiled air filters, we can use a neutral detergent for cleaning. If the air filter is not very dirty, we can simply rinse it with water.

3. After cleaning the air conditioner filter, ensure it is thoroughly dried without any moisture on the surface before placing it back into the central air conditioning unit. Pay attention to the airflow direction on the filter during installation and adhere strictly to the correct installation procedures.