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How a Tankless Water Heater Works
The concept of a tankless water heater is green and simple. Instead of heating and storing hot water in a tank where heat escapes through the walls of the tank – a tankless unit heats water on demand without the use of the traditional storage tank. Supplying hot water when needed means that a tankless unit saves you the cost of standby heat loss associated with conventional tank water heaters.
Because of their energy efficient ability to provide hot water only when needed, tankless units are also called demand or instantaneous water heaters. Upon detecting an open hot water faucet, a flow sensor will activate the tankless system. Cold water is fed through the tankless unit and a series of heating exchangers will heat the water until the flow sensor detects that the hot water faucet has been switched off.
As tankless heaters are activated for a few minutes each day as opposed to tank water heaters that cycle on and off throughout the entire day – tankless units are responsible for long term energy saving and cut energy costs by approximately 30 to 50%. In contrast to traditional water heaters that overheat stored tanked water to ensure a continuous supply of hot water, tankless heaters provide an ongoing supply of hot water on demand for additional energy savings and a reduction of sediment related problems commonly experienced with tank units. Less vulnerable to mineral and sediment accumulation, tankless water heaters last as much as 10 years longer than standard tank units and are therefore backed up by much longer warranties.
Proper sizing and professional installation are major factors determining the complete optimization of tankless energy efficiency. It is highly recommended to hire skilled, heating plumbers for the sizing and installation work to ensure maximum energy efficiency of your tankless heater. Saving space, money and energy - tankless water heaters are the green solution to high residential heating costs.