Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defective

We ordered this item as a replacement for a 6-7 year old unit that began to leak. It came missing the parts kit which I requested from the manufacturer. Finally I installed the new unit and discovered that it leaked at the hot water lever and aerator. When I called the manufacturer they asked for the serial number which is supposed to be on the blue inlet tube but was not present. I was able to get a warranty call from my local representative. They were able to return it to the manufacturer. The new item was installed and works great. We like this item and use it almost every day for tea and drinking water. It seems like the item shipped was a used item with its defects and serial number removed.