My garage has been host to a weekly poker game for the past 5 years. Several of my friends who attend the game (myself included) smoke cigars, and it got to the point that we had to open the garage doors or prop a cheap box fan in an open window to get the smoke out of there. Keep in mind, we play music and are pretty loud, so leaving the garage door open late at night on a neighborhood street was a no-go. Additionally, I live in the Northeast, and leaving windows/doors open became very problematic in the winter. I stumbled across this unit, and my father-in-law (who's an electrician) and I mounted it near the peak of an external wall in my garage, and wired it to a switch. Took less than an hour to install, but your experience may vary depending on your comfort level with that kind of work.

This thing moves some serious air. During the Summer, we run it continuously for about 6-7 hours (depending on how late our Friday poker game goes) and it has never skipped a beat, and keeps the room clear. During bitter cold winter poker games, we turn it on intermittently throughout the night, as this thing moves so much air, if we left it on all night the room would be freezing. If we open a door or window on the opposite side of the garage while this thing is running, it clears the room of smoke in under a minute. The fan itself is relatively quiet considering how much air it moves.

This unit has been a godsend to my weekly poker game with my buds and I've used it for the better part of 3 years. I can't comment on it's performance if you used it all day, every day, but for the 6-7 hours a week that I've used mine, it's never once had a problem. I would recommend this to anyone!

This fan ran fine for a few months, then suddenly started exhibiting a problem where it wouldn't start turning when plugged in. I have no idea why. If I left it plugged in for a while, it would eventually start turning, and then it would run fine for a while - but now it's completely dead.

Total lifespan: less than one year, during most of which it wasn't even running. Died after maybe 300 hours of use. Just terrible.

Professional Products 12" fan w/louvers - It's ok, runs quiet, not much vibration, has very good flow for its size. Arrived with bent arms so the fan would not initially rotate. A 2 minute fix, but the box was not damaged, so something most likely happened at the factory and was not addressed. We will see how long it lasts, but for now, it works just fine.

It's so noisy the neighbors complained. I'm trying to find a solution to the nose problem, like a speed control. I will post the results at a later time.
Update: 8/7/2016, I added a motor speed controller to adjust the fan speed. I can slow it down to a bearable noise level now so as not offend the neighbors and still get good ventilation of my garage.

Great quality fan, and it moves a lot of air. I'm using this in a generator shed for a large 13.5 KW generator. It's not as loud as I'd expect. However, not much can compete with the noise from the generator. I'll try to update the review as time goes by. My only complaint is the extremely short power cord.