Where is the evaporator located in an A/C system?

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Multiple Choice

Where is the evaporator located in an A/C system?

The evaporator sits on the low-pressure side of the cycle, after the metering device. The metering device drops the refrigerant pressure, turning it into a cold, low-pressure liquid-vapor mixture that then flows into the evaporator. Inside the evaporator, cabin heat is absorbed by the refrigerant, causing it to evaporate and absorb a lot of heat, which is how cooling occurs. From there, the refrigerant vapor goes to the compressor (via the suction line). In some systems you’ll find a suction accumulator between the evaporator and the compressor to prevent liquid refrigerant from reaching the compressor, but the evaporator itself is located before the compressor and after the metering device.

The evaporator sits on the low-pressure side of the cycle, after the metering device. The metering device drops the refrigerant pressure, turning it into a cold, low-pressure liquid-vapor mixture that then flows into the evaporator. Inside the evaporator, cabin heat is absorbed by the refrigerant, causing it to evaporate and absorb a lot of heat, which is how cooling occurs. From there, the refrigerant vapor goes to the compressor (via the suction line). In some systems you’ll find a suction accumulator between the evaporator and the compressor to prevent liquid refrigerant from reaching the compressor, but the evaporator itself is located before the compressor and after the metering device.

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