InSinkErator® instant hot water dispensers don't just bring contemporary style to the kitchen sink – they bring ultimate convenience and efficiency to simplify your life in the kitchen. While the instant hot water dispenser sits elegantly on your sink, the hot water tank sits conveniently under it. Water comes up from your supply line to the compact 2.5 litre,2/3 gallon, 60-cup capacity stainless steel tank where it is heated. As water is dispensed, fresh water flows into the tank and the cycle continues. It's that simple. Once you have one, you'll wonder how you ever did without it.