Initial Inspection and Diagnostic Overview

Some conditions which are normal to proper air conditioning system operation may lead an owner to wrongly suspect a problem.
Under conditions of high humidity, the air discharged from the air conditioning system may not feel as cold as expected. This is because the vaporized moisture in humid air heats more effectively than does dry air, making the humid air much harder to cool.

In terms of overall comfort, however, the dryer dehumidified air coming from the air conditioning system in hot, humid weather will evaporate more moisture on a person's skin and provide more of a cooling effect than might be felt from cooler but more humid air.

This fact should be explained to an owner if no mechanical cause can be found for a persistent complaint of insufficient cooling.