Question about Broan-NuTone QT100L Fan

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QT 100L replacement

Need to replace 2 Broan nutone QT 100L fans.  I understand they don't make this model anymore...ours just don't work properly anymore.  We've cleaned them and lubed them but they make lots of noise and one doesn't seem to clear the steam at all anymore.  Do you know which Broan fan replaced the QT 100L and if it will fit the housing of the QT 100L so all we have to replace is the motor assembly?

 

Thanks.

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  • portlandpete Nov 10, 2007

    Help us please--I am experiencing the exact same issue with the identical product. Ideally I would like to swap out the motor assembly and use the same housing if possible. Even better, I would like to install a more powerful and quieter unit using the same housing.



    Any tips out there?



    Pete in Portland

  • Anonymous Feb 27, 2008

    These fans the QT 1OOL don't suck, literally, hard to believe that they stopped making this awesome unit. We've got two, one in each bathroom and the noise alone is worth every penny. If you have one be prepared to junk it and buy new (brand that is). We've cleaned, & lubed repaetedly only to have no success. Good luck!!

  • behmo Sep 10, 2008

    I also have a QT 100L over the shower area and the motor makes lots of noise. I've taken it apart and cleaned but no luck. Wish they had a replacement unit with having to remove housing in attic.

    behmo@aol.com

  • Anonymous Mar 21, 2014

    Broan nut one 84999000. Is this the correct lense for my qt-100 fl?

  • Anonymous Apr 01, 2014

    Need to know how to properly clean the hood and range fan a Broan-NuTone stove. Model # 2736-A

  • Anonymous Jun 14, 2018

    the motors are bad. (or filthy blades )
    clean it, one guy asked how to clean it. wow.
    hire someone that is not helpless?
    they change models for LOOKS (you know, STYLE)
    so old models are not made now. called obsolete.
    but they do sell a new motor fan,
    the fan pries, off, you can clean it .

    ever heard of ebay?
    ever seen the 10,000 fan motors there?
    yah

    https://www.ebay.com/sch/i.html?_from=R4...



    if the squirrel cage fan blade is broken or packed in grease (sweat/lint)
    the fan blade is $10
    buy one?

    now NOISE 101:
    you bought a fan vent is not quiet.
    quiet is a subjective term, this one is quiet.
    to the extreme person it's a jet air plane taking off. sigh. (but is NOT)

    the vent can be plugged up top (inspection time)
    the fan makes noise if broken, filthy or unbalanced with filth, so clean it.
    the motor can fail 2 ways. (bearings bad or shorts in the electro mag.)
    a bad motor is a bad motor, no need to wonder why really.?
    the previous owner put in the wrong motor, dah?
    the fan blade shaft to blade hole is cracked or stripped. same answer as bad blade.

    you have 3 choices, in all cases
    replaces the guts inside.
    or buy a whole new vent. fan.
    or clean the vent up top that is plugged up.
    even vermin nests get there or insulation materials land there, blocking the outflow and overloading the poor motor. (and makes noise)

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10 Answers

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Don't worry, you can purchase just the fan from amazon (not entire motor). here: NuTone 0696B000 Motor Assembly for QT100 and QT110 Series Fans. I hope this was helpful. cheers
QT 100L replacement - qt-100l-replacement-thwo3sxipgmgtjfqzhk52bks-2-0.jpg

Posted on Nov 29, 2014

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You can buy the entire motor assembly for these fans. You do not need to remove the housing. All you need to do is remove the grill, take out the guts and install the new motor assembly. It will take about 10 minutes. Here is a nutone fan motor finder.
https://www.centralvacuumstores.com/nutone/fan-motor-main.php

You can also try Nutone direct. www.nutone.com

Posted on Feb 13, 2009

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I have a QT 100L that was making a lot of noise. After taking it apart I discovered the blower fan was loose causing it to wobble on the motor shaft. Fo $20 I replaced the fan. Problem solved. Found the fan (and any other replacement part) at: http://parts.broan-nutone.com/nutone/Shop?DSP=30115&PCR=1:21000&IID=QT100L

Posted on Dec 02, 2008

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I have had a noise issue with one of these units as well. It turned out to be that the spring clip on the motor shaft that holds the blower wheel in place had slipped down a bit. I simply pushed the spring clip tight up against the blower wheel and the noise went away.

Posted on Nov 11, 2008

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Forget it. I also had the same problem with the QT100L. Cannot buy this unit and the replacement unit is the LS100L by Nutone/Broan. Good news: it is more powerful 110CFM and the housing is the same size. Bad news, the motor assy is completely different and it cannot be mounted in the existing housing. To install the new unit, you will need to cut the ceiling around the fan housing and install the new housing and wire it as well. Be aware that the wiring comes into the housing 180 degrees from the old QT100L unit. That means I hope you have enough romex to reach the hole. My advice is to get another unit from any other company because the quality sucks. It will be as much work to install any other brand as the LS100L.

Julius in CT

Posted on Nov 25, 2007

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When I purchased my QT100L fan it carried a lifetime warranty to the original homeowner. A few years ago my fan also started making the clunking noise and I got a free one under the warranty. Fair enough. Nutone has since merged with Broan, which they claim gets them off the hook so they stopped honoring the lifetime warranty. Nice way to do business, I will NEVER buy another Nutone device.

Posted on Sep 13, 2011

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I have two of these units. They are 11 years old. The one that is mounted level works well. The other one is in a ceiling with about a 30 degree slope. It has gone through 3 motors, and had the fan slipping problem repeatedly. The "D" shaped hole in the fan has worn to a full circle, so there is is no making it quiet, even with a new motor and the clip super tight. So I think the quality is ok, for a perfectly horizontal mount, and flat out horrible for anything else. I'm going looking for something better, hopefull that can use the same mount. Off to the big box to see what they have.

Posted on Jun 06, 2010

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I also noticed the blower fan slipped down the metal shaft and seemed to vibrate too much, causing all the noise. When i slid the plastic blower up half an inch it seemed to stay there, but would slip back down when the fan ran. so i took some black electrical tape, cut into a narrow strip, and wrapped around metal shaft between the blower and the bottom metal stopper that holds the blower in place. The tape keeps the blower from going into the bottom metal stopper (which seemed a little crooked) and now the fan is quiet again. good for one day so far - hope it works for years.....

Posted on May 23, 2010

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Can anyone give me instructions on how to replace the motor on the Nutone QT 100L? Pictures would be a blessing. Where is the fan wheel located and how does the motor attach to it. We are totally inexperienced and the bathroom people who sold me this thing wants $300 to fix it.

Posted on Apr 09, 2010

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My unit started making excessive noise and found out that the plastic fan assembly was loose and not locked to the motor shaft. The $20 replacement part solves the problem and is not difficult to perform.

Posted on Dec 30, 2009

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