A tripped circuit breaker is one of the most common reasons for an overworking blower. When something is blocking the unit’s airflow, the blower must work harder to compensate for the lack of airflow; dirty air filters often cause this. When air filters haven’t been changed in a while, the blower’s energy consumption increases and can sometimes trip the circuit breaker. Before resetting the circuit breaker, it’s essential to check and replace the air filter so it doesn’t trip again.
If you replace the air filter and the circuit breaker trips again, contact your HVAC technician to determine another potential underlying issue. There are many other reasons for a blower to overwork, such as duct leaks, closed or blocked air registers, or dirty coils.