I had a problem with the water supply valve. Since it was plastic and my plumbing is metal it was easy to cross thread the connection. When I called for a replacement part the customer service rep not only took my request, but they then investigated to see when I purchased the system and indicated that it was still under warranty so the part would be free. What made this great story even better is that the replacement part was metal and not plastic. Clearly they are looking at their products and improving them all the time.