Technician A says that suction lines in an A/C system can be easily identified because they are usually warm to touch.Technician B says that discharge lines are usually cool to touch and of larger diameter than suction hoses.

Question

Quizplus · Accepted Answer

Technician A is incorrect because suction lines in an A/C system are usually cool to the touch as they carry low-pressure, cooled refrigerant back to the compressor. Technician B is also incorrect because discharge lines are usually warm or hot to the touch and of smaller diameter than suction hoses, as they carry high-pressure, heated refrigerant away from the compressor.

Technician a Says That Suction Lines in an A/C System