We bought a portable Maytag 5yrs ago, and it lasted 5yrs (the warranty was for that). Now we have an Edgestar 14,000btu and love it. We use it in a backroom we have, 400sq ft. That way I don't run the central AC 3 ton unit. Saves us about $60 a month in the summer time. BTW I'm in the South, the hot South. Yeah, AC works if you have neuro problems. In this heat I can definetely tell a change in my neuro functions, but they improve when I cool down.