I used this with a between-room fan and it works well and is attractive in appearance. My only quibble is that it's largely plastic, including the flanges through which you screw the switch into the box. At this price, something more durable would have been preferred.

When first reading its reviews here was a bit underwhelmed, so taking the consensus advice ordered the Lutron three speed control for my two Broan 512 room to room fans instead. Big mistake! Both Lutron's high and medium speeds resulted in a burning aroma and even on medium did not really quiet the fans, while the lowest setting though noiseless and odor-free fell kinda short in terms of air circulation. Adding to my woes, the Lutron constantly tripped the GFCI bathroom outlet that was on the same circuit, D'oh!

Anyway, ordered the NuTone 57W from Amazon but it never arrived; was graciously issued a refund plus $5 credit and purchased another unit elsewhere. Item I finally received looks slightly different from one pictured here in that it doesn't have the Broan logo below the dial (see attached photo); seems identical in all other respects. LSS, works PERFECTLY with my two Broan/NuTone 512 fans: no whine or hum, no odor, no more tripping the GFCI. Turning the dial just 90° quiets the fans down so that I can't hear them but still moves enough air to keep my bedroom from getting stuffy. Am so relieved!

Guessing most of the negative reviews here came from those using this control with incompatible fans? Note that the 57W is spec'ed for 3A max, which would be less than some attic fans. OTOH the Broan 512 is only .7A so you should be able to gang up to four of them on one of these controllers.

After 20 years putting up with an annoying powder room fan, I've happy to say this totally solved the problem. We turn the knob just a little bit clockwise and the fan magically quiets down from its usual roar and vibration. Still plenty of airflow to clear the odors in just a couple of minutes.

The centrifugal Nutone fan was noisy from day one, and got noisier as it aged. I replaced an identical fan in the shower with a new Panasonic fan, which works great. But what a job! There's no longer access from attic, so I had to cut away lots of sheetrock to remove the brackets and install the new fan. So the fan control was a much better solution.

The control works fine for me, even though as pointed out by other reviewers, it's not exactly linear. Appearance-wise, it's also fine, and I'm pretty fussy.

Didn't work great at first, now 6 months later, barely works at all. When I first installed this switch the actual range of the variable speed was between high and 75% on the dial. Any setting lower than that and the fan barely turned. Now, 6 months later, and I'm lucky if it will even switch on.

Works great. I have a closet with a litter box for my cats. I installed a NuTone exhaust fan in there but it's really too powerful. The speed control switch is great - I can keep the fan running at a very low speed all the time and it's practically noiseless and keeps the area relatively odor-free.