I assumed a had a builder grade NuTone in my 20 year old house. It was buzzing, and would have liked to upgrade to a larger CFM and quieter fan. When I saw how small the box in the ceiling is, I just decided to replace the motor and not deal with attic and tearing the old box out. When I got the fan motor out, I noticed it is a BERKO Marley Qmark A664ICX2 motor. I guess that is a contractor-only model because I could not find much information on it. This motor and fan blade looked the same as the one I took out, so I decided to give it a go. It does match very well, and was an easy replacement. The fan shaft with the new motor was about 1/4" longer. It has a grove on the new one which made for and easy cutting guide, and I did cut that 1/4" off with a hack saw. I also noticed that the long thin bolts in the new motor that hold it all together are about 1/8" shorter, so I took the bolts off of my old motor to make mounting the motor easier. The fan works perfectly. It is quieter because I don't have the annoying buzz, but I guess it is as loud as the original motor was when it was new. It's good for now, but I do hope to swap it out for a stronger, quieter, more current technology in the near future. I included the name BERKO Marley Qmark A664ICX2 in this post to help find the replacement motor based on those keywords! :)

Works perfectly. Easily installed

This fixed my fan, it's quiet, and it works well. So why am I giving it 4 stars? Because the mounting bracket that also houses the bearing was installed on the wrong side. I had to reverse the bearing brackets to get it to fit and work correctly. This was easy to do but if you don't feel comfortable doing something like this you may want to avoid this product. Also, how long it will last is still a question. I'll update my review if it fails in the near future.

This motor is of good quality, and has important dimensions given on the Amazon.ca webpage so I could judge if it fit my case. I used it to replace the motor of my Superior-Broan washroom exhaust fan, Cat No. 664, 0.5 Amp.This motor is rated 0.6 Amp so it runs a little faster and the reduction in noise level therefore is not that much.The plastic centrifugal fan blade that comes with it is too small, so I had to reuse my original metal fan blade.In order to use this motor, the major adjustments that I had made are: 1. Cut short the shaft of the motor a bit (at a marked grove on the shaft), using my Dremel tool. 2. Use a 3/16" drill to open up the hole on my existing metal fan blade so that it can fit the 3/16" shaft of the new motor. On second thought, probably step 1 is not required. The shaft length of the motor may be accommodated in my existing set up.

Bathroom fan replacement, easy to install and is much quieter than the old one.

I have a 40 year old house with 40 year old bath fans. One of them was labeled "Air-o-matic" with a model number 605. It had gotten horrendously scratchy and loud over the years, to the point that it was a little scary because it wasn't clear to me what could even be making the noises it was making. This fan motor is obviously out of production, and the fan assembly/housing itself is totally different from any of the modern ones I've seen, so buying a whole fan kit and just replacing the inner part wouldn't work. (For newer fans that need replacing, you don't even need to unscrew the old motor. You can just clip in the new motor and bracket, since fan housings now are basically standard.) I had almost resigned myself to replacing the entire housing, which is a big pain in the butt if you're not an electrician or handyman.But then I found this. I actually found a slightly different model somewhere else that another reviewer had mentioned worked as a replacement for his Air-o-matic, but I realized pretty quickly that all of these replacement motors look more or less the same, and have basically the same shape as my Air-o-matic. I also realized that my fan mounting bracket actually has one screw hole that's elongated to give a little leeway for mounting replacement motors with slightly different screw placement, so I just took a chance on this.I had read that I needed to convert this from CCW to CW, which made me a little nervous, but it was very easy to unscrew the two pieces from the top and just swap them around - that's all it takes. Then I just screwed it into my existing mounting bracket, plugged it in and boom - working fan! I tested the airflow with a piece of tissue paper just to make sure it was blowing out with the orientation I set, and it was.It turned out to be very easy to install, and it sounds like a new fan (because it is). It's maybe not the *best* motor, and it's definitely not silent, but that's ok because I don't want silence when I'm doing my business in the bathroom. I like to know the fan is on and I want other people to hear it too. So there is some normal fan noise, which is good, and there's also just a tinge of low-frequency motor noise or vibration. My other bath fan, which seems like a replacement already (I am not the original owner of the house) has this same sound so I think it's normal. It's barely noticeable and I probably only even hear it because the whole point of me doing this was to fix a noisy fan, so I'm listening for it. In any case, it's a massive improvement over what was there before.One thing is that this is a 50cfm fan - and most of the "universal" fans and motors I've seen are. It's perfectly fine for small bathrooms but I'll bet there are even some larger bathrooms out there that this would not be enough for. Most computer case fans move significantly more air than that. (In fact, not really sure why we don't just use those fans for bathrooms - they're smaller, cheaper, and easy to replace.) It definitely would not be enough for something like a garage, unless you have more than one.In my case, though, I'm using this in a bathroom that's about 4x10. It's plenty enough for that. I realized after installing it that my old fan wasn't really doing much at all; I would get steamed up mirrors when taking a shower and would have to almost immediately open the bathroom door to keep from having that "sticky" post-shower feeling (where you feel like you need a shower right after taking one), even with the fan on. Not any longer. My bathroom is totally dry after taking a shower now.Hopefully this is helpful to someone out there with an old fan you don't know how to replace. Take the vent cover off and look at your fan motor. If it looks at all similar to this, you can probably replace it with this motor. Unplug your fan and unscrew the mounting bracket and look at the shaft length and fan diameter as well. You can take some exact measurements but I just took a chance. You can always cut the shaft if you need to as well. For me, the whole thing was just a drop-in replacement once I changed the orientation.

My bathroom fan motor died suddenly. I was bit skeptical about buying a replacement motor kit online, wasn't sure if it would fit and work just the same as the one the builder installed in my home. I read the reviews on Amazon and decided to go ahead. I was pleasantly surprised. Fit perfectly and I can't tell the difference between this one and the original one. I hope it lasts years as did the original, let's wait and see.

Exelente cumple al 100

When we bought this house the bathroom exhaust fans were already noisy and slow, but we tried to extend their life with lubrication, etc. However, the one in the master bath finally stopped working and would just groan, while lazily turning once every 10-30 seconds. I put off fixing it because I figured I'd have to replace the entire fan/light/heater unit and I wasn't finding many available that fit the existing opening, and I wasn't looking forward to doing the cutting/drywall/floating/painting/wiring/attic-climbing necessary to put in a new one.I finally bit the bullet and said, that's it, one way or another I'm going to fix this damn thing. I started from the bottom, meaning from inside our bathroom, to see what I could figure out about the unit without an attic visit (this fan is located up under the low part of the roof, getting to it in the attic would be a huge pain).I was able to figure out that the if I took off the light cover and removed the bulb, there was a retaining screw under there. When I moved the retaining screw I was able to remove the entire interior cover of the unit, after unplugging the easily unpluggable connector for the light fixture.That revealed the heater unit on one side (working fine) and the exhaust fan on the other side. The motor for the exhaust fan had an axle extending up into a metal box where the circular blades were, and the blades were a wider diameter than the opening, so I thought I might need to get in the attic anyway. But then I saw that the entire exhaust fan box was removable by taking out one retaining screw and sliding it to the side so that it released from catches.Once I got the exhaust fan box out the rest was straightforward. I detached the motor and went looking for something with the same specs. I found this one, which to my eyeball looked like an exact replacement. Thankfully, it was. When I got this replacement I reassembled everything, switched it on, and YAHOO we now have a working exhaust fan in our master bathroom.In retrospect this was an almost simple replacement, and I figure I'll be able to replace the fans in the other two identical units in about 5-10 minutes each, from the interior using a short stepladder.Attached are two photos. The first one shows a piece of bathroom tissue being held in place by the suction of the newly replaced exhaust fan (when I turned off the fan the tissue fell, fyi). The second shows a side-by-side comparison of the old and new fan motor units.This replacement motor is inexpensive, and I don't know how long it will last, but it appears to be manufactured almost exactly the same as the original fan, which lasted 24 years. Time will tell, and if I have any longevity issues with it I'll come back and update this review.