I installed window units from the inside.OK, the internet is a wonderful thing. The spiffy free standing units are a very poor second to just an old fashioned small window unit. I didn't want to mess with a window unit because of bushes outside, but I will manage. So off to HD tomorrow AM for a small 5000 btu unit, my room is only about 150 sq feet. Got the grandson here to help with the outside work and an outlet handy on the inside.