Window units really only exist at all because of buildings that can't accommodate better designs for either practical or legal reasons. There's just no amount of innovation that can make it so that having the intake and the outtake right next to each other without a nearly perfectly sealed box on one side (ie. a fridge or a freezer) is gonna be anything but a big ugly noisy energy gobbler.
If you can't have central, you should have mini-split, and that's where all your problems get solved. If you can't get mini-split because your landlord won't let you drill conduit to outside then you're just kinda stuck and the laws of thermodynamics are your enemy, not a lack of innovation.
If you can't have central, you should have mini-split, and that's where all your problems get solved. If you can't get mini-split because your landlord won't let you drill conduit to outside then you're just kinda stuck and the laws of thermodynamics are your enemy, not a lack of innovation.