Tankless Electric Hot Water Heaters

Traditional electric hot water storage tank water heaters have been used in commercial and residential applications for many years in Australia. While most household appliances have taken great strides in terms of new technology and efficiency, the traditional hot water heater has not. Most people are aware of the problems associated with standard water heaters as we have all run out of hot water at the most inconvenient times, mostly in winter or on the week end when it’s hard to get a plumber. With the cost of energy on the rise and energy efficient products and the environment top of mind with more and more consumers interest in on demand or electric tankless hot water heaters has increased dramatically in Australia during the past fifteen years.

The concept behind a tankless electric hot water heater is to only heat water as it is needed. This removes the need for a bulky hot water storage tank, saving space and saving energy. Almost every major shortcoming of a traditional electric hot water heater is addressed by a electric tankless hot water heater.

To understand the concept behind tankless electric hot water heaters, it is first important to understand how a conventional electric water heater works. Once you understand it, it is not difficult to see how inefficient this process really is. Hot water storage tanks heat water to about 65 to 70 degrees until the electric thermostat cuts out and the cooling process begins. Outside temperatures and hot water usage combine to reduce the amount of hot water in the storage tank. Every time you turn on a hot tap cold water enters the tank and dilutes the already heated stored water. This process is like adding cold water to a hot bath which is a very inefficient way of containing hot water.

Conventional electric hot water heaters use a simple heating element to heat the water and store the heated water until it is required. Conventional gas hot water heaters employ a similar heating system. Storage tanks have remained virtually unchanged in the operation for many decades.

Instant electric hot water heaters have been used in Australia for many years, some of the old instant electric hot water heater brands still found in many homes include Hocking and Bosch, with the more modern brand on the market being Rheem tankless hot water, Rinnai hot water heaters, Bosch tankless heaters and Stiebel Elton.

A instant electric hot water heater only heats water on demand, only when a tap is turned on. When a hot water tap is turned on and the water begins to flow, a sensor detects that water has started flowing. The technology on the market ranges from relatively crude full flow, full off models, to units with basic temperature controls, to units with advanced thermostatic temperature control and remote digital temperature controls. While the manner of power and temperature regulation varies, the general concept is the same. When the heat exchanger is activated, the water flows across the internal heating elements or heat exchanger and exits the unit at the desired temperature. With the start-up process only taking a few moments sophisticated systems like the Rinnai infinity hot water heater and Rheem integrity hot water heater will remain on until the hot water tap is turned off. As soon as the flow sensor detects that the hot water has stopped flowing, the power to the unit is turned off completely. This means when the hot water is not being used no energy is being consumed.

Considerable space savings can be achieved using installing a instant electric hot water heater. As a result, tankless water heaters can often be installed closer to the point-of-use, delivering hot water to the tap faster thus reducing heat loss and saving energy. employed for Tankless electric hot water heaters have far longer service lives than storage tank type heaters. Electric tankless water heaters can typically last up to 20 years. Since there is no storage of heated water, they tend to be far less prone to hard water scale problems and since they maintain strong water pressure at all times, sediments do not settle out of the water and collect in the water heater - they are washed right through.

Tankless water heaters make ideal replacements for whole house electric and gas water heaters for most residential applications, including houses, town houses, units, motor homes, commercial properties and recreational properties. For extremely demanding hot water applications a bank of heaters can often be installed or a tankless water heater can be paired with conventional storage tank in a booster configuration like the Rinnai demand duo.

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