What is the purpose of the drier in a refrigeration system?

The purpose of the drier in a refrigeration system is to remove moisture and debris from the refrigerant. Moisture can severely damage the refrigeration system by promoting corrosion, forming acids, or causing hydronic problems. The drier often contains desiccant materials that absorb moisture, as well as filters that capture debris and contaminants. This is crucial for maintaining the efficiency and longevity of the system, ensuring that the refrigerant circulates freely and effectively. By keeping the refrigerant clean and dry, the drier helps prevent issues such as reduced efficiency, blockages, and potential compressor failure due to contaminants in the system.