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www.reference.com/article/gas-water-heater-4ffac61d149ffa1

A gas water heater is a water heating system that incorporates a gas burner that heats up the water running through it. A gas water typically has two water pipes, one each for hot and cold water, as well as a chimney running up its middle portion.

www.reference.com/article/gas-heater-c278ca4166bb2a18

A gas heater produces heat for an indoor space, outdoor area or water, and it runs on propane or natural gas. Gas heaters, commonly recommended for colder areas, use gas flames to produce heat and warm the air circulating through a space.

www.reference.com/article/benefits-gas-water-heater-96514295de4fb3b2

Lower running costs, quicker recovery rates and reduced risk of power problems are some of the benefits of a gas water heater. In addition, these heaters have more precise temperature adjustments, ensure continuous water supply and require smaller storage space.

www.reference.com/article/gas-water-heaters-home-9bc3d307d3a722bc

According to Consumer Search, the Whirlpool N40S61-403 and the Rheem 42VR40-40F are the best gas water heaters for the home. These energy efficient models offer well performing machines for the cost.

www.reference.com/article/electric-water-heater-work-tank-13b1bbb6fa22ed9a

Tankless electric water heaters operate without a tank; instead of storing hot water in a tank, the unit draws in cold water once a tap in the system is turned on, and it heats the water to the desired temperature as it is needed. This allows the water heater to be much more efficient since it does

www.reference.com/article/water-heater-expansion-tank-1af62832ac49baed

A water heater expansion tank helps control the buildup of pressure in a hot-water system. Using an expansion tank can reduce damage to the water heater, pipes and fixtures.

www.reference.com/article/water-heater-gas-valve-work-c5a7cb6a918ad34d

A water heater gas valve works by opening and closing to control the intake of gas, regulating the temperature in the water tank. The gas valve is controlled by a thermostat, which signals for the valve to open with low temperatures and close when it reaches the heating threshold.

www.reference.com/article/gas-water-heater-hot-f045c5621009ec91

The most common reasons for an excessively hot gas water heater include a defective gas valve, a defective thermostat and a short in the heating element. The most effective solutions are replacement of the defective parts and adjustments to the heater's electrical wiring scheme.

www.reference.com/article/standard-sizes-gas-water-heaters-96a34776705566ab

As of 2015, gas water heaters are available in sizes ranging from 30 to 70 gallons, but 40- and 50-gallon devices are the minimum standard capacities recommended for most homes. The size needed primarily depends on the number of people living in the home.

www.reference.com/article/gas-water-heaters-vented-c91b536965350e51

Although a gas water heater must be vented for several reasons, the most important reason is that it ensures the carbon monoxide produced by the heater can escape the building. The vent also draws air into the heater to help it work more efficiently.