How To Repair Exhaust Fans

Exhaust fans in the bathroom are responsible for air ventilation and removal of excess moisture from the bathroom. If your bathroom exhaust fan makes a loud noise when operating, or if it isn't replacing stair air with fresh air, it may need repairs.

Remove the Cover

If the fan cover is assembled using screws within its vent grills, use a screwdriver to loosen the screws.

If the fan is ceiling-mounted under a bulb, make sure to turn the light off before attempting repairs. Remove the translucent bulb cover and detach the light assembly from the ceiling to expose the motor.

Remove the Electric Motor and Replace It with a New One

  • The electric motor is plugged or mounted with screws inside that fan housing box. Release the motor from the housing box, and detach it from the wiring harness.
  • Remove the housing box of the fan and clean to remove any accumulated dust.
  • The housing box contains information about the manufacturer, the fan size and the serial number. Using this information, find out if the same motor can be ordered online and confirm its availability in the online hardware stores. If it cannot be ordered online, take the motor along with you to a local home improvement store and buy an equivalent motor.
  • Use screws to mount the new motor into the fan housing box or just plug it in and connect it to the electric wires.
  • Reinstall the cover over the new motor.

Precautions to Consider When Repairing Exhaust Fans

  • Before initiating the repair, turn off the power supplied to the fan from the main electricity panel.
  • Wear safety glasses to prevent any debris from falling into your eyes.