What is a common symptom of a malfunctioning blower motor?

A common symptom of a malfunctioning blower motor is the complete lack of airflow from the vents. When the blower motor fails, it cannot push air through the system, leading to no airflow being delivered to the conditioned space. This could occur due to various reasons, such as electrical issues, motor damage, or obstructions in the blower assembly, preventing it from functioning correctly.

In contrast, symptoms like unusual noises, inconsistent airflow, or a constant running condition usually indicate different issues, such as problems with the fan blade, ductwork, or thermostat controls. Therefore, a complete loss of airflow is a direct indicator that the blower motor is not operational.