Based on our research, the Bionaire BW2300-N Twin Window Fan does a solid job at cooling a room. It comes with dual motors and three speed settings, so you can tweak it depending on how hot it gets. The manufacturer also says it can be installed both horizontally and vertically, which is handy if your window setup is a bit unique.
A lot of people have managed to set it up vertically and found it works well that way. One person mentioned they saw a noticeable drop in room temperature after putting it in a vertical window. Another cool tip someone shared was mounting it on the wall with a TV arm for better maneuverability—pretty clever if you ask me.
Just a heads-up, if you decide to go with the vertical setup, make sure it's snug to avoid any little gaps where warm air or bugs could sneak in. From our research, some folks had issues with the extender panels not fitting perfectly, so you might need to add some weather stripping or make a few adjustments to get it just right.
Performance-wise, it does well in both setups. The folks we've heard from highlight that it cools rooms effectively and circulates air nicely. Of course, like with any window fan, things like room size, window type, and the weather outside can impact its performance a bit.
All in all, the Bionaire BW2300-N Twin Window Fan is pretty effective at cooling a room and offers lots of flexibility with its installation options. Just be prepared to spend a little extra time making sure it fits well if you're going vertical.
Once that's sorted, it should work great for keeping your room cool.