Air conditioning ducts play an essential role in vehicle air conditioning systems, ensuring the smooth flow of refrigerant between different parts of the system, such as the compressor, condenser, evaporator and mass transfer system. Air conditioning duct components include fittings, glands, and fasteners that ensure a tight and secure fit of the ducts, preventing refrigerant leaks. Proper maintenance and timely replacement of air conditioning ducts and their components are essential for efficient and reliable operation of the air conditioning system.