This is our 4th InSinkErator hot water dispenser. The first 3 were a different, smaller model and although they each only lasted about 2 years, we loved the convenience they provided. We purchased this model and it installed easily enough and provides hot water just fine, but the water it dispenses has a foul taste. To see if it was the dispenser or the water coming through the line, I ran all the hot water out and fresh water in. The fresh water tasted fine, but as soon as the water heated in the dispenser, it had a foul taste again. I contacted InSinkErator and their customer service was great. They provided a new dispenser which we installed. We have the same problem and cannot use the water out of the dispenser. I now am the proud owner of a great heating hot water dispenser that provides foul tasting, unusable water. I don't know where to turn from here.