What happens when an A/C system is overcharged?

When an air conditioning system is overcharged, one of the primary consequences is reduced humidity removal. An overcharged system has an excess of refrigerant, which can disrupt the balance of pressure in the evaporator and condenser. This leads to inadequate heat exchange, ultimately resulting in decreased evaporator efficiency.

When the evaporator coil does not function properly due to excessive refrigerant, moisture cannot effectively condense and be removed from the air. This results in higher humidity levels in the conditioned space, negating one of the essential functions of the air conditioning system. High humidity not only discomforts occupants but can also lead to condensation issues and mold growth if left unchecked.

The other options relate to different operational issues that may arise but do not encapsulate the primary effect of overcharging as explicitly as the reduction of humidity removal. Understanding the impact of refrigerant levels on system performance is crucial for maintaining efficient operation and achieving optimal indoor air quality.