After 6 months of use of my X12 system, the Smart faucet display of numbers to select for ounces would skip ahead by one or more numbers or not change when the dispense select knob was rotated in either clockwise or counterclockwise directions. I contacted Customer Support and had quick reply the same day by email to open a Support Ticket Number. I had responses over the next few days from Doreen in Customer Support and received a replacement faucet under warranty a few days later. Doreen was always checking with customer satisfaction during the process and followed up with me after the new faucet was installed.