1. long term external circulation

The external circulation of air conditioning is that the air outside the car is sucked into the car after passing through the condenser of Baotou Northern Mercedes-Benz fittings. The internal circulation is that the air inside the car is circulated through the air conditioner condenser for a long time, and the high temperature air outside is directly sucked in. The effect is certainly worse than that of using the internal circulation. It is suggested that all vehicle owners should be used alternately.

2. the air conditioning filter is too dirty.

Baotou North Benz fittings air conditioning filter used for a long time, will be dust, pollen, even leaves, insects and other clogging. Resulting in a decrease in air volume and poor air conditioning efficiency. It may even smell bad. The recommended filter should not exceed 10 thousand km to replace one.

3. compressor refrigerant shortage

If not for the above two reasons, then it is necessary to go to the repair shop to check whether Baotou Northern Mercedes-Benz accessories air conditioning compressor refrigerant shortage, especially in the use of more than five years of automobiles, may exist in the problem of insufficient refrigerant. Testing and adding refrigerant must be operated in a professional repair shop. After adding refrigerant, it can generally guarantee the effect of 3-5 years.