Portable Air Conditioner Units

There are portable air conditioners that need not be in the window, but an air conditioner will have at least one pipe to vent hot air outside, other wise you are totally against the objective of conditioner.

Check out these phones.:
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I really wish I could find another, but I was one who was very weak and could be installed without removing the window screen or storm window. It was a mark Heier I think, but I could not find another. It worked very well and did not condensing as to destroy the window sill.

Most floor standing great work, simply connect the 2 pipes supplied parts that fit in a window. A disadvantage is that they are a bit noisy.

Buy a swamp cooler, as well