What issue can arise if an air-conditioning system is oversized?

When an air-conditioning system is oversized, it tends to cool the space too quickly without running long enough to effectively dehumidify the air. This is because an oversized unit will reach the desired temperature rapidly, shutting off before it has had sufficient time to remove moisture from the air. As a result, the conditioned space can feel clammy or humid, leading to discomfort for occupants and potential problems with mold or mildew. Proper dehumidification is critical for indoor air quality, and an oversized system fails to achieve this balance, making it less effective in managing humidity levels.