Oil build-up in a refrigeration system will typically result in what?

Oil build-up in a refrigeration system can lead to reduced system efficiency for several reasons. When oil accumulates, it can restrict the flow of refrigerant, leading to insufficient heat transfer. This situation causes the compressor to work harder to achieve the desired cooling effect, ultimately putting a strain on the system.

Additionally, when oil is present in the evaporator, it can coat the heat exchange surfaces, reducing the area available for heat transfer and thus impairing the system's ability to absorb heat from the environment effectively. This inefficiency not only impacts performance but can also lead to longer run times for the compressor, contributing to wear and tear over time.

As a result, the refrigeration system becomes less effective in maintaining the desired temperature, which is a crucial aspect of its operation. Therefore, the choice indicating reduced refrigeration system efficiency is accurate and reflects the negative consequences of oil build-up.