ESCO Air Conditioning Practice Exam 2025 – The All-in-One Guide to Exam Success!

High humidity levels when using an air conditioning system can often be attributed to poor insulation. Insulation plays a crucial role in maintaining the desired indoor climate. If a building is not properly insulated, outside air can infiltrate the living space, particularly during humid conditions. This infiltration can allow moisture-laden air to enter, raising indoor humidity levels substantially.

Effective insulation helps to keep the conditioned air inside and minimizes the exchange of indoor and outdoor air. When insulation is lacking, the air conditioning system has to work harder to remove the humidity, and if it cannot keep up, you'll notice higher humidity levels inside the space.

In contrast, low outdoor temperatures typically result in less humidity, as cool air can hold less moisture. Efficient airflow is essential for proper functioning and distribution of conditioned air, which can actually help reduce humidity when managed correctly. High refrigerant levels generally indicate a problem with the system and can lead to inefficiencies, but are not directly related to humidity levels in the same way that insulation is.