I had an issue with the original chiller that was sent to us. The compressor would not turn on and therefore it would not chill the water. The seller was contacted and they were very nice and easy to deal with. Over a few emails and even a FaceTime live chat, we started out by trying to do some self diagnosing to see if it was something that could easily be fixed on our end, but when we were not getting any results, they immediately shipped out another chiller no questions asked. The new chiller arrived and so far it is working perfectly.