Mahle AC receiver dryer AD89000S

An AC drier, also known as an AC receiver drier, is an important component of a car's air conditioning system. Its primary function is to remove moisture and debris from the refrigerant before it reaches the AC compressor. The AC drier acts as a filter and desiccant, ensuring that only clean and dry refrigerant flows through the system.

Moisture in the refrigerant can cause corrosion and damage to the AC system, while debris can clog the system and affect its performance. The AC drier contains a desiccant material, usually in the form of a molecular sieve, that absorbs moisture from the refrigerant. It also has a filter to trap any debris or contaminants present in the system.

By removing moisture and debris, the AC drier helps maintain the efficiency and proper functioning of the air conditioning system. It also prevents the formation of ice or frost in the system, as moisture can freeze and restrict refrigerant flow. Regular inspection and replacement of the AC drier is important to ensure optimal performance and longevity of the car's air conditioning system.