Bests & Worsts Reviews from Amazon

When shopping for a window fan I set a budget of $100 or less. I wanted one that would last the longest and move the most air with the least noise possible. Long-lasting meant mechanical controls (not digital push buttons or remote controls) and air movement without noise meant the biggest blades possible. I shopped a lot and decided this was the one for me, and at a lot less than I expected to have to pay. I have the fan plugged into a Clapper outlet control (that's about 20 years old and works perfectly) so I can turn it on/off from bed if I want without a remote dying or getting lost or consuming expensive batteries. The Clapper Sound Activated On/Off Switch, 1 Each I've had this fan about a month now and I have no complaints. It makes as little fan/air noise as I think it reasonably can (and doesn't beep, I hate beeping appliances!) and moves as much air as I would expect for its size. It's weaker than a 20" box fan in terms of total airflow, but 2 x 8" fans = 16" and 16 < 20, so that makes sense. The thermostat works well. With a thermometer mounted on a nearby wall I've correlated thermostat knob position to approximate room temperature and it's entirely repeatable. The side extension adjustment has been mentioned negatively in other reviews but I had no issues with it. I measured my window, subtracted the fan + left-side extension's width, then extended the right-side as needed and locked that adjustment before inserting the fan into the window, then slid the left-side extension into place and set the whole assembly down and lowered the window on top of it. This fan has allowed me to not use my A/C so far this year when all my neighbors have theirs running daily...what more could I ask for? I have this set to exhaust in my bedroom window and two windows (all 3 the same size) open in the living room so air flows in from a shaded patio and it's perfect for me. I really feel this is the best window fan on the market that's <$100.