When inspecting roof and ducted air conditioners, what should be tested?

Testing fan speed and vent operation is crucial as it directly assesses the system's ability to circulate air effectively. The fan's speed impacts the air distribution throughout the space, ensuring that conditioned air reaches all areas efficiently. If the fan operates at an inadequate speed or does not function properly, it could indicate potential issues such as mechanical failure or electrical problems that might compromise the system's overall performance and efficiency.

Additionally, evaluating vent operation ensures that air can flow freely through the vents, which affects both the comfort level within the space and the energy efficiency of the air conditioning system. Blockages or restrictions in the vent system can lead to uneven cooling, decreased air quality, and increased energy consumption as the system works harder to maintain the desired temperature.

In contrast, while thermostat function, coolant level, and condenser cleanliness are also important aspects of an air conditioning system's operation, they do not directly reflect the immediate effectiveness of air distribution and overall airflow performance, which are the primary concerns when inspecting roof and ducted air conditioners. Thus, assessing fan speed and vent operation provides a direct indication of the system's operational integrity.