What is a common consequence of inadequate airflow in cooling systems?

Inadequate airflow in cooling systems commonly leads to higher return water temperatures. When airflow is restricted, the system struggles to effectively remove heat from the space being cooled. As a result, the temperature of the water returning to the cooling source rises, because it doesn’t have enough contact time with the cooling coils to adequately lower its temperature.

This situation can lead to a host of operational issues including reduced system efficiency, potential overheating, and even system failure if not addressed.

In contrast to the correct choice, some of the other options would typically suggest improvements or benefits that are counter to the effects of inadequate airflow. For example, increased efficiency and improved cooling capacity would be outcomes of good airflow, not poor airflow. Similarly, lower energy bills usually arise from efficient operation and effective heat exchange, which is unlikely when airflow is insufficient.