What is the role of the receiver/drier in A/C systems?

The receiver/drier plays a crucial role in air conditioning systems by both filtering refrigerant and absorbing moisture. It is primarily located in the refrigerant circuit after the condenser and before the expansion device. The filtering function is vital because any contaminants in the refrigerant can cause damage to other components of the A/C system, such as the compressor. By removing these impurities, the receiver/drier helps ensure the system operates efficiently and reliably.

Additionally, moisture in the refrigerant can lead to issues such as ice formation in the expansion valve or harm to the compressor through the creation of corrosion or acid. The receiver/drier contains a desiccant material that absorbs moisture, thus protecting the system from such detrimental effects. Understanding this dual function highlights the importance of the receiver/drier in maintaining the overall health and efficiency of the A/C system.