LaskoWeather-Shield Performance Box Fan, 3 Speeds, Innovative Wind Ring System for Up to 30% More Air, Carry Handle for Bedroom, Office, Home, 20 Inch, White, 3720

These box fans are excellent! I bought these to replace the two Lasko 3720 box fans that I bought back in 2008. They are quite and are extremely powerful. The best part is there is no having to assemble these you just put the feet on, plug it in and turn it on and it only cost 2 cents an hour to run talk about energy efficiency!

I want a 20-in box fan that, above all, is QUIET. It is to be used either in my bedroom or kitchen window or in my living/dining room, where I sleep and/or watch TV. Thus, low noise is of chief importance.From the information I have been able to find, including at the Lasko website (LaskoProducts dot com slash box-fans) and among consumer reviews, it's impossible to know just how loud any fan is. The Product Features of a similar model, Lasko 20-Inch Premium Box Fan 3-SPEED, includes "innovative Wind Ring air system provides high volume air movement...that focuses the air movement, increasing its velocity...30% more...than most standard box fans." Gambling that there is something to this more than just advertising hype, I figured this would mean that use of the low speed might be satisfactory hopefully most of the time. The model at hand here, the 3720, does not include as much in its description, but the Wind Ring grille looks to be exactly the same. And since I probably would have the fan in a window at least some of the time, I opted for this model having the Weather Shield. The other does not.When I turned the fan on, I was extremely pleased to find that it is indeed (what I subjectively would call) whisper quiet--that is, on the low speed. But even on the low speed, it does indeed push a nice breeze 15 feet across my living room that except on the hottest days is sufficient to keep me comfortable. Now, of course I can hear it, but it is quiet enough that I don't need to turn the TV up any. On the medium speed, I don't really need to turn the TV up, but I might two or three points at times. And on high, yes, it's fairly loud, but no box fan isn't. And even so, it's only about as loud as the low speed of another fan I have. So for my living/dining room purposes, this fan is excellent. :-)In my bedroom, on the upper floor that accumulates quite a bit more heat than the main floor, the head of my bed is only about 3 feet from the window but 5 feet from the TV. In the window I turn the fan so that it is blowing outward. (In another review I crossed somewhere, the person was saying some fans might blow well but don't draw well. I don't see so much logic in that; unless a fan creates or destroys air molecules, it draws exactly as much air as it pushes. I mean, where else could a fan get the air it blows other than from what it draws?) On low, again, the fan is quiet enough not to be an annoyance, but I do consistently turn the TV up a few points. The air it draws is not a stiff, focused column of air, but a soft, diffused movement of air. With my bedroom door open, and the door and window of another bedroom open to air from the cooler side of the house, within 5 minutes the hot air in my bedroom has been expelled and the room feels appreciably cooler and comfortable. In a bedroom I much prefer a soft displacement of hot air with cool rather than a big, hard blow. So here, too, I am very pleased with the quiet and performance.Then, wondering about the other model, the 3723, I ordered it. Side by side with the 3720, the airflows of the 3 speeds are comparable, if not differing only imperceptibly, if not identical; but the 3720 is noticeably quieter, not much, but enough to appreciate. I returned the 3723, my expense.Slim, light; perfectly balanced, no wobble or vibration even on Hi; metal cabinet is an appealing, subdued, neutral shade of slightly greenish gray that blends well.There's nothing not to like about this fan, other than the packaging. The fan is snug in its factory box, with no outer box/packaging and no Styrofoam spacers, bubble wrap, or other protection. I had to send one back due to deformation of the cabinet, but Amazon took care of the return shipping, thank you. The replacement I've received is fine.This model is $10 or $12 more than the other, but for my money, a little bit more quiet is what I'm after and worth the $12. I've already ordered a second and may order a third. Highly recommended.

The fan brand quality and design are both poor. This creates wobble vibrations, unstable fan balance even with feet design, sharp edges, and "weather shield" appears to be upon out-blowing air formation only, there is no back engine "weather shielding" visible on inspection item.I should have returned it immediately, but it was very hot here, so my family did try to make due. The noise became truly unbearable with loud clacking sounds each time the off-kiltered blades hit the metal backing. Little pieces of plastic began to fly and the item was damaged. When we went to pick it up to inspect it, there are loose pieces of metal around he screw areas and other places of the aluminum on these that cut into my fingers.When it happened to just one initially I thought it was just the one faulty unit and set it aside for a project. then the second began to create noise as well. Upon inspection, it appears that the wobbly is unfixable, because the inside of the rotational area houses a "weather shielded" fan blade assembly, that has no track. this means it is easily falling off center without any rigid design to hold it in place.Not only is this disappointing but I also waited too long to return them. I would strongly recommend another type of fan. This was purchased because the quality of Lasko fans used to be remarkable a few years ago. However, the way the internal blade piece is attached now will always stretch and cause the wobble problems that cause that noise. I am not sure it will always be this noisy, and one of them functioned properly for 1 month. This is not a bearings-issue noise but the internal blades are not stable so they hit the metal supports in the back. It seems that the design could have benefitted from a circular back or indeed true weather-shielding to the back of the blade assembly as well. It is not a good design.The level of noise is deafening and disturbing to the family. It is extremely loud "clacking" when it hits and the speed causes the blades to damage. This means the unit is unusable- both of them.

Best fan out there