What is the main purpose of a filter drier in an air conditioning system?

The main purpose of a filter drier in an air conditioning system is to remove moisture and contaminants from the refrigerant. Moisture can cause significant damage to the system, leading to corrosion, ice formation, and reduced efficiency. The filter drier contains desiccant materials that absorb moisture and filters that capture debris and contaminants, preventing them from circulating in the system. This is essential for maintaining the system’s efficiency, longevity, and reliability, as any contaminants can interfere with the operation of components such as compressors and expansion devices. This function is crucial in ensuring the optimal performance of an air conditioning system throughout its operational life.