Which factor can negatively affect the efficiency of a refrigeration system?

Improper insulation leading to heat gain can significantly decrease the efficiency of a refrigeration system. When insulation is inadequate or damaged, external heat can enter the system, causing the compressor to work harder to maintain the desired temperature. This extra workload not only consumes more energy but can also lead to increased wear and tear on the components of the refrigeration system, potentially shortening its lifespan.

Maintaining proper insulation is crucial to minimize energy loss and ensure that the refrigeration system operates at optimal efficiency, as it helps to keep the cold air contained and prevents unnecessary heat exchange with the surrounding environment. This is why addressing insulation issues is fundamental in maintaining effective refrigeration performance.