What would excessive moisture in a refrigerant system lead to?

Excessive moisture in a refrigerant system can lead to corrosion as water in the system reacts with refrigerants and metal components, creating corrosive acids. This corrosion can damage various parts of the system, such as the evaporator and condenser coils, which can lead to leaks and ultimately compromise the system's integrity. Corrosion not only affects the longevity and performance of the refrigerant system but can also lead to increased maintenance costs and more frequent repairs. In contrast, higher performance, better efficiency, and improved heat transfer are not benefits associated with excessive moisture; rather, moisture is a detrimental factor in refrigerant systems.