What is a common sign of a failing compressor in an air-conditioning system?

A common sign of a failing compressor in an air-conditioning system is the presence of unusual noises during operation. When a compressor begins to fail, it may produce sounds that are atypical for normal operation, such as grinding, rattling, or squeaking. These noises can be indicative of internal mechanical issues or excessive wear and tear on the components.

The compressor is a critical part of the air-conditioning system, responsible for circulating refrigerant and maintaining proper pressure levels. When it malfunctions, it may struggle to perform its functions, leading to these audible warnings. Recognizing these sounds early can help in diagnosing the issue before it leads to complete system failure.