Automotive Service Excellence (ASE) Air Conditioner Certification Practice Exam 2025 - Free ASE Air Conditioner Practice Questions and Study Guide

High humidity significantly impacts the performance of an air conditioning system, primarily by increasing the load on the system and decreasing its efficiency in cooling. This is because the air conditioning unit must work harder to remove moisture from the humid air to maintain a comfortable indoor environment. When humidity levels are high, the system operates with a greater demand on its components, which can lead to an increased workload for the compressor and other parts of the A/C system.

Moreover, higher humidity means more latent heat that must be removed from the air, in addition to the sensible heat. The presence of additional moisture in the air limits the system's capacity to effectively cool the space, as the cooling process involves dehumidification along with cooling. Therefore, the combination of increased operational demands and the need for dehumidification results in lower cooling efficiency, making high humidity a significant factor in A/C performance.