My NuTone Model LS-100SE motor is going bad and I can't find a replacement anywhere, can you help me or at least tell me a good replacement fan that would fit in the same fan foot print?

I just installed one of these; the directions were not really helpful, and I'm fairly handy doing these things. Anyway, the 'specs' say this is 2 sones, and mine is pretty quiet. I did have to tighten the acorn nut that is under the light bulb, that holds the light fixture to the rest of the unit pretty tight. My noise was coming from vibration, not the fan 'noise'.

This model has been discontinued but replacement motor assemblies are available. There is no off the shelf model that will fit in the existing housing. If you do not want to replace the housing then the motor assembly is the way to go.
You ca purchase the replacement from either site below:
http://www.centralvacuumstores.com/Bath-Vent-Fan/NuTone/Motor-Assembly/0696B000-Motor-Assembly.php

http://parts.broan-nutone.com/nutone/Shop?actn=quicksearch&searchtype=all&indextype=7&keyword=qt100l&Search.x=0&Search.y=0

The additional wires are for a starting capacitor, not included with the motor. The easiest way to hook-up is to order the Outlet Assembly p/n 88617000 (available at Coastal Tech Supply.) The assembly includes the capacitor, connector, and shroud; and will replace the existing outlet assembly in the housing. Minor electrical work is required to remove the old assembly and install the new one.

Home depot usually has a good selection of replacement fans. They usually are a fan on a mounting plate, not just the fan motor itself. Sometimes you have to purchase the entire fan unit just to get the fan motor plate inside for a replacement part.

I had the LS-80SE and it appears that that model is discontinued, including the replacement motor. I ended up replacing it with the QTN110E, which is a bit bigger. The QTN is designed to mount to a joist on the opposite side of the LS model, I avoided having to do that by just screwing through the metal body into the joist that the LS was mounted to instead of using the mounting holes that are provided on the QTN. You will end up having to remove a small amount of drywall approx 1"x 11.5" to fit the QTN in. Put a backing strip or piece of plywood up and behind the drywall so that you have something to screw the filler piece of drywall in to when you do your repair, mud the cracks, sand, texture if need be... hope that helps

The replacement motor is available for that fan model. The NuTone part number is the 0696B00. It can be purchase from these sites:

http://parts.broan-nutone.com/nutone/Shop?actn=quicksearch&searchtype=all&indextype=7&keyword=qt100l&Search.x=0&Search.y=0

http://www.centralvacuumstores.com/Bath-Vent-Fan/NuTone/Motor-Assembly/0696B000-Motor-Assembly.php

http://www.ventingdirect.com/nutone-0696b000-power-unit-assy-packaged/p431404?y=16&term=0696b000&x=41

Hello,
The fan/motor part of the Broan fan is replaceable. They are actually very simple to take out and install a new part.

The part can be easily purchase here...

http://parts.broan-nutone.com/broan/Shop

Heatman101

it may be that the bearings nead to be oiled, have you tried to spin it by pushing it with a pencil and see if it sticks or spins freely ?

The motor is a common item to need replacement in bathroom vents. Replacements can be found just about anywhere that deals with electric motors. You might even be able to get a replacement where you originally purchased the unit. There are dozens of web sites that you can locate a replacement. http://www.electricmotorwarehouse.com is just one. Simply do a web search on replacement bathroom vent motors. Also if the are able to purchase items from wholesale vendors you can get one from Grainger's. It should cost around $20 to $25
Part # 62345-000 (replacement motor part #).


However there is an alternative to replacement. This depends entirely on how handy you are with these kinds of things and how bad off the motor is. If your not comfortable with repairing this kind of thing don't bother with the rest of this.

I hate to replace anything that may be repairable. Unfortunately my friends know this and recently one asked me to look at his NuTone bathroom vent motor before he replaced it.
For the cost in time of an hour I was able to refurbished it.
A good way to check if it's a candidate for repair is to check how much play is in between the shaft and bushings. If you can feel movement then it's best to go ahead and replace it. If the problem is that the shaft is tight and just hard to turn then it may just need some cleaning and fresh lubrication.
The steps are simple. Once you have the motor removed from the vent cage you will see a pair of nuts and bolts holding two brackets in place. These brackets(one on either side of the coil) are what hold the shaft centered and house the bushings. Remove the bolts and the brackets. Be careful not to lose any of the washers on the shaft. These are spacers and need to be replace the same way they went on if they come off. All you need to do is clean both ends of the shaft put a little oil on the shaft and in the bushing and put it back together. If the motor has a plug and not just bare wires for reconnecting to the power supply then it's safe to just plug it in to any outlet for testing after you remount it in the vent cage. You will know right away if you were successful.


Hope this helps.

https://www.centralvacuumstores.com/nutone/fan-motor-ls-series.php