How can you tell if a gas furnace blower motor is failing?

Identifying a failing gas furnace blower motor is crucial for maintaining efficiency and comfort. The presence of strange noises or a failure to start is a clear sign of potential issues with the blower motor.

When a blower motor begins to fail, it may produce unusual sounds such as grinding, squealing, or rattling, indicating that internal components are wearing out or have become loose. Additionally, if the motor fails to start at all, it may not be receiving power, could have a worn-out capacitor, or might be experiencing mechanical failure.

Monitoring these indicators is important for timely maintenance or repair. Addressing issues early on can help prevent more extensive damage to the furnace or other components in the heating system. The other options, while they may indicate other problems, do not specifically highlight the failing status of the blower motor as effectively as strange noises or a complete failure to start.