AC InfinityAIRLIFT S16, Shutter Exhaust Fan 16” with 10-Speed Controller, EC Motor - Wall Mount Ventilation and Cooling for Sheds, Attics, Workshops, and Greenhouses

I needed an exhaust fan for a 1,320 sq ft post and frame pole barn I had built to store by dieselpusher RV and Jeep. The rafters were 14-foot high with a metal roof, so there was a lot of space that needed ventilated during hot summer days. This exhaust fan is built like a tank! It has a powerful suction and easy to use controls with variable speed selection. It integrated well with a separate thermostat I bought (but by the built-in thermostate version - it is worth it). The long cord on the controller allows me to change speeds and turn the fan on/off while standing on the barn floor. I highly recommend this exhaust fan unit!

I used a pair of these as a whole house fan, putting them in upstairs windows. I especially like the speed control, which allows you to run the fans quietly, albeit at reduced air volume. They also appear to run on lower power than the other whole house fans I've used, and it is nice that they have standard wall plugs, so no need to wire them up to an electrical box. At high speed, they are noisy, but no worse than other fans that move significant amount of air. One fan does not move enough air to adequately vent our 2000 sq ft. home. Power drain for the different speed settings is as follows (per fan). From low to high speed, all in watts: 6, 9, 14, 21, 29, 40, 55, 86. So even at top speed, these are only drawing 86 watts. The fans are also well made.

I purchased the smaller version of this fan to ventilate a generator enclosure, it did not move enough air so I purchased this model and after running the generator for four hours with the outdoor temp at 78 degrees the temperature never exceeded 96 degrees inside the enclosure with the fan running at full speed , I think that when running with the outdoor temp being cooler I could reduce the fan speed.I’m very pleased my generator runs cool and the generator noise is greatly reduced

This item works fine without using the fan controller. You can wire it to an outlet and it'll run full speed when power is applied. Good for using as a gable exhaust fan for your home. It is loud on the exhaust side so be aware, not loud enough to be a deal breakers but a bit louder than a lasko 20" box fan on high.I purchased 3 of these for a remodel and better cooling in the attic for the summer months. Of the 3 I bought, 2 worked as expected, the 3rd had some harmonic imbalance that made it vibrate and resonate at a frequency that could heard and felt on the entire side of the house, both inside and out. This was not discernable when just bench testing it beyond a little rattle in the louvers. The rattle when operating wasn't able to be resolved without, from what I could tell, disassembling it. All screws were tight and I was nearing the end of my return window, so back it went.The other 2 have been operating for a week now with a hardwired 120vac thermostat in the attic that simply clicks it on by temp.Clean your eave venting as this will move some air and clogged vents won't help.My main gripe is that the mounting flange doesn't stick out very far at the top, bottom, and sides or where the curve is closest. Your hole cutout needs to be pretty spot on as there's not a lot of wiggle room for error. Also make sure to bolt into more than just plywood and if on your house, but some rubber isolation between the flange and house to minimize vibration and noise transfer. Weatherstripping works as well. Not needed on not living spaces I suppose.The other small gripe is the louvers don't form a bug tight seal. Probably nothing I would attempt to fix with bug screening as the volume of air it moves would have the screens clogged in short order anyways.In my application it works great to not have a roof mounted and naturally leak prone installation as well as having more real estate on the roof for solar applications. If you have a passive roof venting system, even a ridge vent, this active cooling will make a huge positive difference for internal temps.

So far (one month) I love this fan. I got it to replace a failing Lasko 16" window fan after determining that current version is not as good as the ten-year-old one I had, so I went looking and ended up with this one. It works great and at setting 4 (out of 8) has more suction than its predecessor. I am thrilled to have a fan with louvers for the first time, which work great. I look forward to some bad weather to assess how well it performs at avoiding water infiltration (when off of course).The only thing I don't like is it is definitely noisier than the Lasko it replaced, even on lower settings - on higher settings it is *very* loud. I was surprised because it has more blades than the Lasko (3) - usually more blades means quieter. This may or may not matter, depending on your use case. Most of the noise appears to come from the louvers and their joints, not the motor. In my case I'm happy to trade noise for suction and hopefully lower energy consumption. I measured wattage consumption and it ranges from 25 watts on lowest setting to about 375 watts on highest. I neglected to measure the Lasko for comparison.Now, I pray it lasts for a decent time. As it involves electronics, I have it plugged in to a surge protector, which I highly recommend even though not mentioned in the instructions.I've posted a picture of its mounting in a window in my NYC apartment.UPDATE 7/31/21: I continue to love this fan. It's been running almost continuously now for 2.5 months.The initial noisiness of the louvres seems to have worked itself out - now on the lower settings the air sounds predominate. On higher settings (4 to 8) it is still rather loud. But it works so well on lower settings that I don't need to go there - generally "2" is sufficient to get quite a suction from all the windows of my multi-room apartment.Probably obvious, but in case not - this is *not* a consumer-grade window fan. I was able to adapt it to work as one because I am quite handy and have plenty of wood and plexiglass around. It's really designed to be fastened into a wall opening. In a window, great care must be taken to seal the window opening outside the fan housing - if you don't, the suction and efficiency will be severely compromised.UPDATE 6/16/22: Continuing to love it !UPDATE 12/10/23: Still going strong.