I have 3 of these, the latest one i installed after only 4 weeks the top split. The other that have been in the same room for a year have no issues. The on that split had never been used and only had a few owners manuals lying on it. I moved the manuals and found a 2 foot long split. I hope I don't have to haul the entire unit back to Sams. I am hoping that they will replace it.