Solar Tank

The most common hot water system involves heating and then storing hot water in a tank. When hot water is used, it is drawn from the top of the tank, where the water is the hottest, and fresh cold water is delivered into the bottom of the tank. Because hotter water is lighter and sits above colder water, it is realistic to see a tank that has bottom half cold and the top half hot... this is referred to as thermal layering, or stratification. Eventually after enough hot water usage the water suddenly turns cold, which is something everybody has probably experienced!