I knew these portable air conditioners dont really work but I succumbed because of the heat this year. Its a lot of money for a minimal effect. The whole tube out the window thing is inconvenient and annoying, we had to rearrange the room to accommodate it. Its also extremely noisy. Having said all that, it is vaguely cooler in the room. Probably not $700 cooler though. Make your own mind up about weather its worth it. The machine itself seems well designed and fine.