Who is correct regarding the locations of the receiver/dryer and accumulator?

The receiver/dryer and accumulator are both critical components in an A/C system, but they serve different functions and are located in specific parts of the refrigerant circuit. The accumulator is found in the low-pressure side of the system, typically situated between the evaporator and the compressor. Its purpose is to store excess refrigerant and help prevent liquid refrigerant from entering the compressor, which can cause damage.

On the other hand, the receiver/dryer is located on the high-pressure side of the system, specifically after the condenser and before the expansion device. Its role is to filter out moisture and debris from the refrigerant and store liquid refrigerant before it enters the expansion valve.

Given this context, the designation in choice B accurately reflects the proper understanding of where each component is situated in the system, as well as their respective functions. This distinction is important for troubleshooting and maintaining A/C systems effectively. Knowing the locations helps technicians identify potential problems and ensure the efficiency of the entire cooling process.