1. Ordinary paper type

   - Basic filtration； mainly filter large particles of dust and pollen.

   - Low cost, but limited filtration efficiency,and need to be replaced frequently.

   - Commonly found in economy vehicles.

2. Activated carbon filter

   - Adding an activated carbon layer to the ordinary filter paper can absorb odor, formaldehyde and some harmful gases.

   - Suitable for congested sections of the city or users with high air quality requirements.

3. HEPA high-efficiency filter

   - High filtration accuracy, can filter PM2.5, bacteria and tiny particles (filtration efficiency more than 99%).

   - Commonly used in high-end models or areas with poor air quality.

Note; It may increase the wind resistance of the air conditioning system and affect the air output.

4. Multifunctional composite filter

   - Integrated antibacterial coating, negative ion generator and other functions, with both sterilization and air purification effects.

   - High cost, commonly found in new energy vehicles or luxury models. 

The replacement of the cabin filter is affected by the environment and filter element. Generally recommended;

- Ordinary paper type; Replace every 10,000 to 15,000 kilometers or every 6-12 months.

- Activated carbon/HEPA type; Replace every 15,000 to 20,000 kilometers or every 12-18 months.

- Dusty/humid environment (such as construction sites, coastal areas); Inspect and replace every 5,000 to 10,000 kilometers.

Note; Replace immediately when the air volume of the air conditioner decreases, the odor is obvious, and the cooling efficiency decreases.

1. Filter element blockage

   - Faults; The air volume of the air conditioner is small, and the cooling/heating effect is poor.

   - Cause; Dust accumulation or dampness and mold due to long-term non-replacement.

2. Odor problem

   - Faults; Musty or sour smelling when the air conditioner is turned on.

   - Cause; The filter element breeds mold after adsorbing pollutants, or the evaporator is not cleaned.

3. Filter failure

   - Faults; Increased dust in the car and passengers are prone to sneezing (allergic reaction).

   - Cause; The filter element is damaged or not installed correctly, resulting unfiltered air entering.

1. Choose the right model

   - The shape and size of the filter elements of different models vary greatly. You need to purchase them according to the manual to avoid air leakage or loose installation.

2. Regular cleaning/replacement

   - The filter element cannot be washed with water (except for a few washable types). If it is blocked, replaced directly.

   - Check the air conditioning evaporator and air duct when replacing, and sterilize them if necessary.

3. Installation specification

   - The filter element usually has an airflow direction mark (arrow pointing to the inside of the car), and reversing installation will greatly reduce the filtering effect.

4. Environmental-adaptability selection

   - It is recommended to choose HEPA filter elements in dusty areas, and mildew-proof activated carbon filter elements are preferred in humid areas.

The cabin filter is a "health barrier" for passengers in the car, especially in the haze or pollen season. Regular replacement not only improves air conditioning performance, but also reduces the risk of respiratory diseases. It is an important part of daily maintenance that cannot be ignored.

Types

Maintenance and replacement

Common faults

Notes