Review on Air King 9166F Whole Window by Denise Smith

If you're reading this, you probably got the message. These large fans can create negative pressure in your home by blowing outwards. You light this thing up and then open windows elsewhere in your home to essentially create powerful artificial cross ventilation that quickly replaces the hot daytime air inside your home with the cool night air outside. In the off-season, such a fan can eliminate the need for air conditioning and save you a fortune on your energy bills. We even occasionally leave it running on a warm winter's day just to replace the stale air in the house. This is no joke. That's big. That is hard. It looks almost industrial. You will need to think carefully about how you are installing it in the window and you will be driving large screws into the window frame to keep it stable and in place. Once you install it, you'll probably leave it in place forever. (You install it so that you can open and close the window as needed without removing the fan.) You also need to make sure the place you install it is away from things like blind cords, curtains, etc .lies as it's easy enough to pull things in if it gets too close. You want it to be in a bare window where there's nothing around. Once you turn it on, you can probably just about tolerate being in the same room when it's on low. It's ridiculously loud in the highs and quite loud even in the mids. In other words, don't install it in your bedroom and expect to sleep next to it, it's too big a fan for that. But it works and it works well. It moves the volume and creates the negative air pressure needed to exchange the air fairly quickly, even in a very large house. Mine is upstairs in the guest room. On chilly evenings, I open a few windows downstairs on the other side of the house and open a window or two in the master bedroom, then cheer on this beast and turn on the various ceiling fans throughout the house to move the air. Air. Then I leave the room and let this thing work its magic. In my fairly large house, it takes about an hour for the hot, stuffy air inside to be replaced with fresh, cool air outside, equalizing the temperature inside and out. Then I go back upstairs and turn that thing off to restore the quiet in the house. What I like: the power and the fact that it lasts for several seasons. I had a rattle or two that needed fixing, but that was due to errors in my setup. The fan and the case itself are well made. What I don't like: especially that it's so loud. You can turn it on quietly in another room and leave it on all night. But I usually turn it on at medium and turn it off before bed.