Which factor is least likely to contribute to effective refrigerant system performance?

Ignoring minor leaks is least likely to contribute to effective refrigerant system performance because refrigerant leaks, no matter how small, can significantly impact the efficiency and effectiveness of the system. Even minor leaks can lead to a reduction in refrigerant levels, resulting in decreased cooling capacity and increased energy consumption. Moreover, leaks can contribute to environmental issues, particularly if the refrigerant is harmful to the ozone layer or contributes to global warming.

In contrast, regular checking of gauges, analysis of pressure drops, and routine cleaning of condenser coils are all proactive measures that help maintain and improve system performance. Regular gauge checks ensure that the system is operating within its designed parameters, while analyzing pressure drops can help diagnose issues such as blockages or malfunctions in the system. Routine cleaning of condenser coils is essential for maintaining efficient heat exchange, as dirty coils can hinder performance and lead to overheating or reduced cooling. Thus, ignoring minor leaks stands out as the choice least likely to support effective refrigerant system performance.