We installed this fan a couple years ago and we've been really happy with the results. There's nothing like opening your windows on those first few warm spring days and getting a breeze of fresh air. We bought it with the remote and two controllers so we could turn it on upstairs and downstairs. Everything worked as advertised and I've never had issues with the remotes not working.The only negative thing about this fan was that the installation was more difficult than I expected. The fan comes with the flexible exhaust tubing attached (great!). Unfortunately, since the fan was too big to fit through my attic hatch easily, I had to cut the fan hole in the ceiling first, and then pass the fan through the hole. I had to disconnect the tubing from the fan in order to get it through the ceiling hole. It was super easy to disconnect with a couple latches that you unhook. The difficult part was getting the exhaust tube back onto the fan. Since the exhaust tube had to be squished a bit to get through the attic hole, it was a bit oval shaped and fitting the oval back into a round shape and over the manifold and putting the clamp ring back in place took me and my son well over an hour of struggling in the heat of the attic. Some bad words may have been heard.After we reattached the exhaust pipe, the rest of the installation was easy. The fan is quiet on low and medium speed and has a low pitched hum at high speed. It creates a serious breeze when it's on high.I'm not sure about the review that mentions fans creating mold. I've never heard this and a fan creating mold would surprise me since the way to avoid mold in an attic to to make sure it is well ventilated and to not have things like bathroom fans exhausting moist air directly into the attic. It seems that this fan would help with ventilation of the attic. I guess it's possible that cool air from inside hitting the hot interior of the roof could create condensation but it seems like this would happen naturally with any roof because soffit vents basically do the same thing by pulling air along the inside of the roof up to the ridge vent and out.

I installed the QuietCool QC ES-7000 in my home. Overall, and so far, I believe this is an excellent product. I installed the fan in my 2nd story walk-in attic along with their RF wireless control module (IT-36002). I’ll start with some pros and cons, then relate some tips based on my installation experience.Pros:This fan moves a ton of air. In fact, on the high setting, it will disturb anything lightweight like a piece of paper anywhere in the pathway of air movement. I made the mistake of starting the fan prior to opening any windows or doors, and it literally sucked the soot out of my fireplace at the other end of the house. The fan is also as quiet as I expected it could be.The product is obviously very well-made. They have put a lot of thought into the design and their attention to detail is quite good. My only issue with the product is that when I unboxed it and tested it for the first time the fan blade rubbed against the fan hand guard. I suspect this was the result of shipping, and all I had to do was manually bend the fan hand guard away from the fan housing with my hand to remove the rub.The user manual is very well written and contains many tips that are clearly based on real customer experience and feedback given to the manufacture. Their YouTube videos are good as well.Cons:The fan housing assembly is quite heavy and may be too difficult for the average homeowner to install as a one person job (which is what I did). I recommend two people for this task, at least for the portion of the job that requires hanging the fan assembly from the rafters by its metal straps.The user interface of the RF wireless control is clunky. Setting the timer and the fan speeds is not very intuitive and they could’ve done a better job with the user interface here. I really wish they had a Wi-Fi enabled module that would allow me to control the fan from my iPhone rather than via a special purpose, dedicated remote control.There were a few extra small parts that came without explanation. For example, two white screw assemblies that I believe are meant for use in a window in some fashion but there was no mention of this in the user manual or the YouTube videos. Not a big deal.The frame for the ceiling grill would benefit from being slightly wider so that the screw holes used to attach it to the ceiling would be sure to hit joists that are 16 inches on center. I had to install screws at an angle on one side of the ceiling grille frame in order to catch the joist on that side.A few tips:If you install the RF wireless control hub, you may find the screw holes on the plastic hub housing do not align well with the screw holes in the fan housing; they are not quite the same spacing as with the metal electrical box that came mounted on the fan. With a little manipulation, however, you can get the screws to catch their holes.When you attach the nylon strapping they provide to help support the duct in the attic, make sure you triple-up or quadruple-up the nylon before you screw it into a rafter, otherwise the nylon will likely tear.Because you will likely remove the ducting from the damper box during installation, once installation is complete I recommend using metal tape to seal the ducting to the damper box. This is the same metal tape the manufacturer uses to seal the ducting to the fan housing.Finally, as I mentioned before, if you run the fan on high be sure to have windows and doors open prior to starting the fan. Otherwise, you may find things moving in your house that you would prefer not move…😁