Where is a filter dryer typically installed?

A filter dryer is typically installed upstream from the metering device to effectively remove moisture, debris, and contaminants from the refrigerant before it enters the expansion valve and the evaporator. This placement is crucial because moisture in the refrigeration system can cause freezing at the expansion valve, leading to operational issues and potential compressor damage. By positioning the filter dryer upstream, it ensures that the refrigerant is clean and dry, thereby protecting sensitive components of the system and optimizing overall performance.

Installing the filter dryer at this location helps maintain system efficiency and prolongs the lifespan of the equipment by preventing contamination that could otherwise degrade the components downstream.