When you think about purchasing a new water heater, it's crucial to consider its fuel type (energy source), as well as its availability and cost. The fuel used by a water heater affects not only yearly operation costs but also its energy efficiency.

The most popular types of water heating systems for home are conventional storage water heaters.

A typical storage water heater for one family has a ready reservoir (from 20 to 80 gallons) of hot water. When you turn on the hot water tap, hot water is released from the top of the tank. Cold water enters the bottom of the tank constantly to replace that hot water, ensuring that the tank is always full.

Fuel sources for storage water heaters include electricity, natural gas, propane, and fuel oil. Before buying a new water heater, find out more about fuel types available.

You might also consider some less traditional storage water heaters such as heat pump water heaters and solar water heaters. These kinds of the water heaters are commonly more expensive but they have lower yearly operating costs.

Selecting a Storage Water Heater: before buying a new storage water heater, consider its size and first hour rating, fuel type and availability, energy efficiency and costs.

Installation and Maintenance: your water heater energy efficiency is optimized through its correct installation and maintenance.

Correct installation depends on many factors, which include local building code requirements, fuel type, climate, and safety matters, especially those relating to the combustion of gas- and oil-fired water heaters. Consequently, it's wise to invite a qualified plumbing and heating worker for installation of your storage water heater.

Regular water heater maintenance can drastically extend its service life and minimize efficiency losses. Read your owner's manual for exact maintenance recommendations or call a plumbing and heating contractor to do the work for you.