I purchased 2 of these units 2 years ago; one was ok but the one used for the upstairs bedroom drew hot air from the outside so filled the reservoir every 20 minutes - returned that one. This year sees the second one moving in the same direction as the other one so as it's out of warranty will probably end up in the dump. They look good, are heavy and don't give enough cold air for my liking - wasted $500.