What is a common sign of refrigerant leaks?

A common sign of refrigerant leaks in an air conditioning system is the presence of hissing sounds coupled with reduced cooling efficiency. When refrigerant is leaking from the system, it often creates a hissing noise as it escapes, which can be heard near the source of the leak. This sound indicates that the system is losing its cooling capacity, leading to inadequate cooling in the conditioned space. Reduced cooling efficiency occurs because the refrigerant is essential for absorbing heat from the indoor air; without the correct amount of refrigerant, the system cannot function effectively, resulting in a warmer environment and decreased overall performance. Recognizing these signs early can help in addressing the issue before it leads to more significant damage or costly repairs.