We purchased this on 2/13 and shortly thereafter it developed a drip.....nearly drove me nuts until I figured out that if you fill it to within 1/2" of the fill line it doesn't do it. Now the pump has developed a small, regular noise that I can't quite define. Kind of a chugging noise....doesn't do it consistently but shows up whenever it feels like it. We use water out of our RO so it can't be hard water buildup....don't know what it is. I did mark that I would recommend to a friend but I'd be sure they knew what they were getting. It does make a fair amount of noise, but that noise also blocks out alot of street noise...makes a great "white" noise machine. The light is bright but that's good, as well. I'm not tripping over the chord! Since we've purchased this machine our room is cooler and the moisture (we live in southern Arizona) is wonderful for easing our allergies. It may wind up being returned if the pump noise doesn't stop but I honestly don't think there's anything out there, other than a $100 unit, that wouldn't have these problems. I'd probably just trade it out and hope the next one works better.