Conventional storage tank water heaters are the most popular type of water heating system for the home. A single-family water heater offers a reservoir of hot water typically from 20 to 80 gallons . It functions by releasing hot water from the top of the tank when you turn on the hot water tap. To refill the hot water that’s been used, cold water enters the bottom of the tank, ensuring that the tank is always full. In LA, storage tank water heaters generally have three different fuel sources: natural gas, propane, and electricity.
Conventional tank water heaters are the most cost-effective way to go, but generally will require more maintenance over the life of the tank.