When it comes to energy consumption in the home a water heater ranks just behind air conditioners and furnaces so when making a choice a gas model answers your efficiency and economics needs. Coupled with energy efficiency, gas water heaters are also time efficient, heating water twice as fast as electricity, less expensive to run and are faster at heating a tank of water than all other forms of energy.

Energy is converted into the form of heat and transferred into water by the water heater. It functions in much the same way as boiling water in a pot on a stove. Most water heaters use energy absorbed from natural gas. Other water heaters can use fuels like propane or be powered by electricity.

The least expensive fuel for water heating purposes is however natural gas. Because you actually make a flame when you burn gas they are more efficient at heating more water faster than electric because the burners are capable of higher temperatures than electric elements. The water in the tank is warmed up by the heating element known as a burner sequestered under the tank. Attached to the wall is a valve that can be opened to let in gas to the heater, or closed to stop the flow.

The design of the heater allows for the presence of a thermostat to sort of keep an eye on the temperature right inside the device. A pilot light or a spark lights the burner up. A close look at a gas grill will reveal a similar process. Exhaust fumes are expelled from the system by a vent above the tank.

It is necessary to have something like an exhaust system to get rid of toxic emissions. A PVC pipe is a vital part that crowns the venting system, through which emissions are sent. In modern day, technology has enabled the development of water heaters that use fans in conjunction with their vents that pipe out exhaust through a wall. Be informed that water heaters powered by natural gas also have an additional pipe that supplies cold water.

A cylindrical tank stores water, and once it is heated the water is supplied to faucets through internal pipes in the system. There is another type of water heater known simply as the tankless version. This variation can be used with dishwashers or a clothes washing machine by circling water through a series of burners.

There is a lot to learn about tankless gas water heaters, but once understood how tankless water heaters work you can have endless comfort with them. They are able to supply hot water continuously and also conserve energy. With a tankless gas water heater providing an endless supply of hot water, your hot water requirements are not limited. Gas requirements for tankless water heaters are much larger than for storage water heaters.

If you are someone always in a hurry, a tankless heater may not be appropriate since the water does not start heating until the faucet is turned on. A tankless heater has a zero storage facility for water. In the case of tankless heaters, the water, after being heated is only routed through the heater to the faucets for eventual use.

Article Source: http://www.energyefficienthomearticles.com

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