ESCO Air Conditioning Practice Exam

Where is the oil separator installed in an air conditioning system?

1. Before the metering device

2. In the discharge line

3. On the incoming air side of the condenser

4. In the suction line

The correct answer is: Before the metering device

The oil separator in an air conditioning system is typically installed before the metering device. This location allows the oil separator to effectively remove oil from the refrigerant before it enters the metering device, ensuring proper system operation and preventing potential issues such as oil fouling the expansion valve or capillary tube. Installing the oil separator before the metering device helps maintain the efficiency and performance of the system.