Cool Your Future: Ace the 2026 ETI Air Conditioning Repair Certification Test!

A failing blower motor is typically indicated by weak airflow or the presence of unusual noises during operation. When the blower motor begins to fail, it may not generate sufficient air pressure, leading to decreased airflow throughout the system. As for unusual noises, these can manifest as grinding, squealing, or rattling sounds that signal mechanical issues within the motor itself, possibly due to worn bearings or other internal faults.

On the other hand, constant high airflow would suggest that the blower motor is operating effectively rather than failing. A silent air conditioning unit may indicate that the blower motor is not functioning at all, but the absence of noise alone does not provide evidence of a failing motor, as the system could simply be off or malfunctioning in other ways. Lastly, consistent temperature in all vents points to a well-functioning system where airflow is balanced, indicating that there are no issues with the blower motor. Thus, the identification of weak airflow combined with unusual noises serves as a reliable indication of a failing blower motor.