Nice, low profile fan, moves a good volume of air, quietly. Easy to adjust to your window. The temperature controls are a nice touch, but didn't seem quite right as the fan would stay on longer than I thought it should. The controls are a little clunky to adjust the settings, but simple enough that it wasn't so bad.

In comparison to the average twin fan: quiet operation, moves more air, appears to be better constructed, thermostat works well. Very pleased w' product purchase.

Not the best fan I ever on but it works .

it is small, I like it. It should have a remote control

Purchased Feb 2015. Very good airflow and noticeably quieter then the 30 dollar dual fans. Have it on high running almost 16 hours a day and one outside fan finally died July 2015. Emailed Bionare support today July 30, asking if I can get a replacement motor. Waiting for reply.

Four stars because I love it, but the middle fan sometimes stops, then Starts after 2 mins! I use as a exhaust fan it's really good I love it just needs slightly better quality

The fan is only reversible by removing it from the window and flipping the entire unit around. Also there's no bug screen to help with keeping insects out

Bought a digital one and got an analog with normal thermostat but it works good so oh well. In summation buy it if you need a good exhaust fan for summer heat

it a good fan

works great. the only problem is if you want to reverse the air flow you have to actually take it out of the window and reverse the whole fan. i have a similar one that i bought that you can just adjust in/out airflow with just a touch of a button