Viva Self Clean Stainless Steel Water Cooler with Hot & Cold by Viva Appliances Bacteria buildup is prevented by using reactive oxygen to clean the insides of the cooler. It automatically cleans six times a day. Avoids the muddy taste that develops over time in normal coolers from not being cleaned. Approximately 70% stainless steel front has the most stainless steel out of any top loading retail cooler. Professional grade construction uses a stronger frame than used by normal coolers. Build quality is designed to last for many years of heavy use. IceChill technology powerfully cools the water using a large ice block. Water is maintained at a frigidly cold temperature, making a delicious and refreshing cup of water. Makes 1.6 gallons of very cold water every hour. Proprietary heating technology maintains water in the ideal steaming hot range. Makes robust cups of tea, instead of weak watery tea. Makes 1.3 gallons of piping hot water every hour.