How to Remove the Blower From a Furnace Motor

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There may come a time when it will be necessary to remove the blower from the furnace. Most often, you will need to clean the blower assembly thoroughly before the heating season starts. Once you know how to remove the blower from a furnace, you will be able to complete the project in an hour.

Things You'll Need

  • Screwdriver
  • Socket wrench set
  • Allen wrench
  • Scrap wood
  • Hammer
  • Disconnect the power to the furnace by turning off the circuit breaker at the electrical box. Remove the access panel to the furnace by removing the two screws that hold it in place, using a screwdriver. When the screws are removed, lift the panel up and out. Remove the wiring harness connector from the fan motor by pressing in on the plastic clip and pulling it apart.

  • Remove the four screws that hold the blower fan housing to the furnace using either a screwdriver or appropriate size socket wrench. Pull the blower motor housing out carefully from the furnace. Be aware of any wires or connection lines and do not damage any when pulling the housing out.

  • Remove the two wires connected to the capacitor by unscrewing the terminal screws with a screwdriver. The capacitor is located on the side of the blower housing.

  • Mark the squirrel cage hub where it sits on the blower motor shaft. This will be necessary to make sure when it is reinstalled it is back at this exact position. Loosen the set screw on the squirrel cage hub where it connects to the shaft using an Allen wrench. Turn the housing over and remove the two bolts that hold the motor bracket to the housing using a socket wrench.

  • Stand the housing on its side so you have access to the motor and the inside of the squirrel cage. Place a scrap piece of wood on the shaft inside the squirrel cage and gently tap it with a hammer to knock the shaft through. Pull the motor completely out of the squirrel cage and blower housing.

  • Remove the air deflector inside the blower housing by removing the four screws that hold it in place with a screwdriver. Lift it out of the way so that the blower wheel (squirrel cage) can be removed from the blower housing.

Tips & Warnings

  • Always disconnect electrical power before working on appliances.

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