HVACDIAGNOSTIC
Problem Cluster

Blower Motor Problems

Blower motor not working, fan not spinning, running slowly, air handler fan not working. Strong airflow-related cluster.

Symptoms in This Cluster

Blower Fan Not Working

The indoor air handler fan won't spin, runs slowly, or makes noise but doesn't move air. No airflow from vents.

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Condition Variations
Blower Not Spinning at AllBlower Humming but Not SpinningBlower Running Slow or Weak

Weak Airflow from Vents

Air is coming out, but the pressure is significantly lower than normal.

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Condition Variations
Weak Airflow from All VentsWeak Airflow in Some Rooms OnlyWeak Airflow Upstairs Only

Uneven Cooling or Heating

Some rooms are significantly warmer or cooler than others in your home.

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Condition Variations
Upstairs Hot, Downstairs CoolSome Rooms Hot, Others CoolUneven Heating in Winter

Fan Running Constantly

The indoor blower fan never stops, even when the system isn't heating or cooling.

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Related Clusters

Weak AirflowDuctwork Problems
← Back to airflow ductwork