- To remove moisture from the refrigerant. Moisture in the refrigerant can cause a number of problems, including corrosion, freezing, and reduced cooling performance. The receiver dryer contains a desiccant material that absorbs moisture from the refrigerant.
- To store liquid refrigerant. The receiver dryer acts as a temporary reservoir for liquid refrigerant. This helps to ensure that there is always enough refrigerant available to the expansion valve.
- To filter debris from the refrigerant. The receiver dryer contains a filter that removes dirt, metal particles, and other debris from the refrigerant. This helps to protect the other components of the A/C system from damage.
Here are some of the symptoms of a bad A/C receiver dryer:
- Reduced cooling performance
- Poor air quality from the vents
- A/C system cycling on and off frequently
- Noise coming from the A/C system
- Leaks in the A/C system