HVAC Blower Motor Assemblies

Replacement Parts > HVAC > Motors, Core, Case and Related Components

HVAC Blower Motor Assemblies

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What is an HVAC blower motor assembly?

An HVAC blower motor assembly is an assembly of parts that works together to power the blower motor of a heating and/or cooling system. It is responsible for moving air through the ducts of the system.

What are the components of an HVAC blower motor assembly?

An HVAC blower motor assembly typically consists of the following components: a motor, a fan, a squirrel cage, a shaft, a bearing, a capacitor, and a resistor.

How do I know if my HVAC blower motor assembly is faulty?

You can determine if your HVAC blower motor assembly is faulty by looking for the following signs:

  1. The blower motor turns on but does not move any air.
  2. The blower motor is making loud noises or squeaking noises.
  3. The blower motor turns on but then turns off after a few seconds.


Can a faulty HVAC blower motor assembly cause damage to my HVAC system?

Yes, a faulty HVAC blower motor assembly can cause damage to your HVAC system. The fan may overheat or the motor may draw too much current, both of which can shorten the life of the system.

How do I replace my HVAC blower motor assembly?

Replacing your HVAC blower motor assembly is a fairly straightforward process. Here are the steps you should take:

  1. Turn off the power to your HVAC system at the breaker panel.
  2. Remove the blower motor assembly from the system.
  3. Install the new motor assembly in the system.
  4. Re-attach the wiring to the motor assembly.
  5. Turn the power back on at the breaker panel.


How often should I inspect my HVAC blower motor assembly?

It is recommended that you inspect your HVAC blower motor assembly every 6 months. This will help you to identify any potential issues before they become serious problems.