Water Heater

Water heater is actually an umbrella term for a host of appliances, all of which are used to heat water. These devices can be electrical or not. Even among the electrical and non-electrical water heaters, there are many subtypes, depending on the kind of energy and mechanism that is used to run them.

The electrical water heaters will need a direct connection to the power supply in order to function. They work by directing the water into a tank which is heated by means of a heater coil. The water is heated continuously, as long as the electric connection is made, and when required, the hot water can be removed by turning a valve connected to the tank. The water flows out due to the pressure difference.

These water heaters are very common today. But there are some problems connected with their use due to which their popularity is not universal. The main problem is that heating water through electricity is not very cost-efficient. It costs double what gas water heaters cost. Also, since the electrical water heaters store the heated water in a tank, it is prone to lose heat due to radiation. When the person needs water for the next time, the heater will need to be started again, because the water will have cooled down. Despite using thermal insulation, such loss due to radiation cannot be avoided.

Gas based water heaters work almost similarly, but they use natural gas to heat the water instead of electricity. The costs are significant here too, but they are definitely lower than electrical water heaters. Because of the scarcity of natural gas, though, these water heaters are slowly being phased out from household and commercial use and replaced by other technologies.

In order to reduce the loss of heat due to dissipation to the surroundings, many people prefer instant water heaters today. These water heaters, also called tankless water heaters, are directly connected to the main plumbing line. Water is heated as it passes through the line. When the faucet connected to the line is turned, hot water is obtained. This is then replaced by more of the normal water from the plumbing line and that is then heated for future use. This process can be kept continuous. In some of these tankless water heaters, filtration units are also connected. This helps people get pure filtered hot water as and when they require. In order to make them more efficient, some of these water heaters are arranged so that they can give hot as well as cold water whenever required.

Instant water heaters come with strong recommendations because they are energy-saving. They will only heat water according to requirement, due to which there is no loss. They are very easy on the electricity bill too. Most apartment owners are finding that these instant or tankless water heaters are suiting their purposes better.

Another type of water heater that is becoming very popular nowadays is the solar water heater. These water heaters need collectors that are placed in an open elevated area where sunrays are received. The water is passed through these collectors. The incident sunrays will heat the water inside the collector which is then channeled back to the source from where it came. Thus, the person receives heated water. Sensors are used to detect the temperature of the collectors and to ensure that the water is not heated beyond the required limit. The sensors can be adjusted to a desired temperature.

People living in cold countries cannot do without water heaters. However, water heaters are also required in other parts of the world because boiling water is one of the best ways to purify it before consumption. Due to this reason, water heaters have a worldwide market.

This Water Heater Review is Written/Updated on Feb 27th, 2009 and filed under Home Appliances. Both comments and pings are currently closed.

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