What symptom indicates that a capacitor may be failing?

The symptom that indicates a failing capacitor is characterized by the system having difficulty starting or operating intermittently. A capacitor in an HVAC system plays a crucial role in providing the necessary electrical energy to start the compressor and blower motors. When a capacitor begins to fail, it may not be able to provide sufficient power, leading to issues such as the motors struggling to start or stopping unexpectedly during operation.

This behavior is critical to note because a capacitor that isn't functioning properly can lead to increased wear and tear on the system, possibly resulting in more significant damage over time if not addressed. Observing intermittent operation or starting issues can act as a warning sign that the capacitor needs to be inspected or replaced, ensuring the HVAC system runs efficiently and reliably. Other symptoms, while they may indicate different problems within the HVAC system, do not specifically point to capacitor failure.