Hellobee Boards

Old building, no a/c. The kid's windows tilt open at the top and they are both too short to reach the handle (it's at close to eye level on me). We leave them tilted open at night and use fans when it's really sweltering. We leave our window wide open at night but we are always very vigilant when the windows are open. I will close them when not in the room. We have a latch on one window that will prevent it from opening all the way, so I latch it when not in the room.

We have the exact same problem. I put window fans in the top part of the window and made sure kids were in cribs or unable to access it - like no furniture to climb up nearby. But honestly it gets so hot being the third floor that we mostly used our central ac on that floor.

I love open windows but personally I couldn't sleep knowing they were open!

I live in Texas so the windows are pretty much never ever every open. I wouldn't think twice about it if my kids were still in a crib but I might get nervous once they were able to move about on their own.

Child safety bars. You can get removable ones (we take ours out of the window to install air-conditioning units each summer) - and I'm sure prettier options are available. They're less obtrusive in person than they look here.

I don't see why you couldn't install them at the top instead of the bottom if you prefer...