Powerfully filters regular tap water using Brita pitcher filters. Save hundreds of dollars a year when you stop buying water bottles. Keep your room uncluttered without those bulky bottles. * No plumber installation required, the filter works with a standard 5 gallon water bottle. Just refill at your sink when empty. * Self cleans several times a day using reactive oxygen technology. The unstable oxygen rips bacteria apart & keeps the cooler clean from biofilm & murky off-tastes. * Glacial Chill technology uses a ring of ice to keep water at a steady temperature just above freezing, making a refreshingly chilly glass of water. Produces 1.6 gallons of icy cold water per hour. * HotBoost technology injects preheated water into the hot tank thus maintaining a very high average temperature. Produces 1.4 gallons of piping hot water per hour.