What is one way to maintain proper airflow in a refrigeration system?

Maintaining proper airflow in a refrigeration system is crucial for its efficiency and performance. Regularly cleaning the coils ensures that dust, dirt, and debris do not accumulate on the coil surfaces. When coils are clean, they can effectively dissipate heat and allow the refrigerant to absorb heat from the interior of the refrigerator or cooler. Good airflow helps maintain the proper temperature and pressure levels within the system, leading to reduced energy consumption and improved operational longevity.

The other options, while related to refrigeration, do not specifically address the critical need for airflow. Changing refrigerants frequently does not impact airflow directly. Lowering the thermostat setting could lead to overworking the system without improving airflow. Increasing insulation levels can enhance thermal efficiency but does not influence the flow of air necessary for the refrigeration process. Thus, regular cleaning of the coils is the most effective method for maintaining proper airflow.