If the indoor dry bulb is 73°F and the wet bulb is 68°F, what might be causing discomfort for the customer?

The situation described indicates that there is a discrepancy between the indoor dry bulb and wet bulb temperatures, which suggests that humidity levels could be affecting comfort. The dry bulb temperature of 73°F is relatively cool, but the wet bulb temperature of 68°F indicates a certain level of moisture in the air. The difference of 5°F between these two temperatures points towards a moderately high humidity level, which can be discomforting in various conditions.

A potential reason for discomfort in this scenario could be related to the airflow through the evaporator unit. If the system is oversized or the airflow is too rapid, it may not be adequately dehumidifying the air. This lack of proper dehumidification can lead to a perception of increased humidity, making the indoor environment feel less comfortable. When air moves quickly over the evaporator coils, it can be cooled without adequately removing moisture, leading to feelings of muggy or sticky air.

Addressing the airflow and the system sizing may potentially alleviate the discomfort the customer is experiencing, as proper airflow is essential for achieving both cooling and dehumidification effectively.