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A dirty bathroom fan and grille

Bathroom Fan Motor Repair

Dear Mr. Electrician: How do I repair my bathroom fan motor?  The exhaust fan in my bathroom stopped working after making noise for several weeks.  Does the entire  bathroom fan need to be replaced or can it be repaired?  Is this something that a homeowner can do? Answer: Yes!  In many homes it is possible that a homeowner can repair hers or his own bathroom exhaust fan motor.  Quite a few bathroom fans were manufactured for a simple and fast installation by the original installer.  Consequently the repair can be almost as simple.  NOTE: Some text links below go to applicable products on Ebay, Amazon.com or to my book. The fan motor above is held in place with two screws supporting the bracket (Note the pear shaped slots). The electricity is connected with a plug.  The housing is already grounded from the power supply, so when the motor gets mounted securely, ground continuity is maintained. Repair Parts For Mobile Home Bathroom Fans at Mobile Home Parts Store  Fix Your Bathroom Fan Motor The key to a successful bathroom fan motor repair is getting the correct replacement parts.  Many bath fan replacement parts are available, but identifying the correct parts can be a chore. When your bathroom fan was manufactured, a model number was labeled inside of the housing or on the fan motor support bracket.  (Note: This is not the number on the motor itself)  The fan model number may be stamped into the metal or there may be a label glued inside somewhere. Before working on the fan, put a drop cloth down and wear a face mask and eye protection.  Old bathroom fans sometimes have an abundance of dust and dander inside.  Use a ladder when reaching up for the fan.  Read my post about safety precautions. Amazon Sells Bathroom Fan Replacement Motors When replacing the motor, always replace the fan blade.  Don't try to use the old fan blade with a new motor.   It is difficult to remove the old fan blades and they can get damaged.  Sometimes the bath fan motor replacement is sold as a kit with bracket, motor, and fan blade. Some Nutone and Broan model bathroom fans that were originally installed by the builder of your home have a retrofit bath fan upgrade kit available to change out the motor, fan blade, and grill while the existing fan housing remains in place.  This is the easiest thing to do, and the manufacturer claims an improvement in noise and air movement.  The kit is sometimes cheaper than buying the replacement parts.  The bath fan upgrade kit is a Nutone 690NT and can be used to repair and upgrade several models of Broan and Nutone fans, but not all.  Note that Broan has an identical upgrade kit with the part number 690 and a different color box.  Nutone and Broan are the same company.  They merged together many years ago. I have read recently that the 690NT has been discontinued.  The replacement for the 690NT is a Nutone Quickkit #QKN60 for 7.5" x 7.25" housings. ...