Technician A says AC system lines and hoses that are cold have lower refrigerant pressure than warmer lines and hoses. Technician B says frost on a system component usually indicates a refrigerant leak in that area. Which technician is correct?

Question

Quizplus · Accepted Answer

Cold lines and hoses in an AC system typically have lower refrigerant pressure due to the refrigerant's phase change and pressure drop. Frost on a component usually indicates a restriction, not necessarily a leak.

Technician a Says AC System Lines and Hoses That Are