Traditional storage water heaters are appliances that heat and store water in a tank for later use. They typically consist of an insulated tank, a heating element, and a thermostat. When hot water is needed, it is drawn from the top of the tank, while cold water enters from the bottom to be heated. These heaters come in various sizes, usually ranging from 20 to 80 gallons, to accommodate different household needs. They can be powered by electricity, natural gas, or propane. Traditional storage water heaters are commonly used in residential settings and are known for their reliability and simplicity.