difficulty removing old ceiling exhaust fan housing


  #1  
Old 09-30-22, 09:50 AM
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difficulty removing old ceiling exhaust fan housing

I want to install a new exhaust fan in my lower bathroom. Since it's on the lower floor of a 2-story home, I do not have the luxury of going into an attic for this procedure.

The old fan box has a metal clip on one side (in the black oval outline). You can see it in the attached photo. That clip seems to be gripping the edge of the fan box. What is a technique for freeing the box from that clip?


 
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Old 09-30-22, 10:30 AM
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Typically the metal brackets or clips are tack welded to the metal box and are nailed into the joist.
Some brackets are nailed in place to the bottom of the joist and then the sheetrock covers the bracket.

Some fans have sliding brackets that are nailed to the sides of the joists.
It's a messy job and you'll probably end up having to do patch work.

I will usually locate the joist side of the box and using a hammer and large screwdriver
to drive up between the box and joist.
You may be able to push the side of the box up away from the joist.
 
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Old 09-30-22, 10:42 AM
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If you can get a motor that matches, leave the box as is. It would look something like this:

https://www.supplyhouse.com/Broan-C3...BoCV6sQAvD_BwE
 
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Old 09-30-22, 10:50 AM
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That takes a Broan 7550 fan insert.
 
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Old 07-27-23, 09:49 PM
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Did you ever figure out how to remove this?
I have one just like it that I need to remove
 
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Old 07-28-23, 04:57 AM
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Go up in the attic and take a look. Sometimes there are nailing flanges on the outside of the box that are not accessible from the inside.
 
 

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