The air filter is different from the air conditioner filter. The air filter filters the air entering the engine, as well as dust and particles, but the natural air entering the engine. The air-conditioning filter element filters the air-conditioning air. For example, if you turn on the air-conditioning or external circulation, it filters dust and pollen. 

The difference between air conditioning filter and air filter is as follows：
1. The full name of air filter is air filter element. Open the front hood of the vehicle, usually facing the right side of the engine, as long as you use a screwdriver to open the fixing screw on the air filter box, you can see the air filter element. Its function is to finely filter the air entering the engine cylinder to ensure that sufficient and clean air enters the cylinder. Whether it can be kept clean and unobstructed is related to the life of the engine;
2. Under normal circumstances, the vehicle travels 10,000 kilometers or is replaced once every six months, and it is best to replace it every three months when the vehicle is used under severe haze or catkins. If the replacement period is exceeded, the filtering performance of the air filter element will deteriorate, and particulate pollutants in the air will directly enter the cylinder, which will easily produce carbon deposits, resulting in a decrease in power and an increase in fuel consumption. This will shorten the life of the engine for a long time;
3. The full name of air conditioning filter is air conditioning filter. Open the storage box of the co-pilot of the vehicle and remove the baffle to find the air-conditioning filter element. Its function is to filter the air that enters the compartment from the outside to improve the cleanliness of the air, provide a good air environment for the people in the car, and protect the health of the people in the car;
4. Under normal circumstances, it is recommended to replace it once every six months. It can also be determined according to the external environment of the driving. If the environment is relatively humid or the haze is high, the replacement cycle can be shortened appropriately. If the replacement cycle is exceeded, the air-conditioning filter element will lose its filtering effect if it absorbs a large amount of impurities, and the accumulation and multiplication of bacteria will seriously affect the health of passengers in the car.