Tankless water heaters: also known as Instantaneous water heaters,Continuous flow water heaters, Inline water heaters, Flash water heaters, On-demand water heaters or Instant-on water heaters are gaining in popularity.These water heaters are of high-power and instantly heat water while it flows through the device, they do not retain any water internally except for what is in the heat exchanger coil. They are different from tank-style water heaters that keep a barrel of hot water ready to go 24 hours a day, tankless water heaters can help save energy and money by heating only the required quantity of water. According to Manufacturers by heating water on demand, tankless water heaters provide a 30 percent savings water-heating and a 50 percent decrease in energy consumption.
Installation: These heaters can be installed throughout a household at more than one point-of-use (POU), far from a central water heater, or larger centralized models may still be used to provide all the hot water requirements for an entire house.
What are the advantages of tankless water heaters?
1. Continuous flow of hot water (compared to a limited flow of continuously heated hot water from conventional tank water heaters).
2. Potential energy savings under some conditions.
How they work?
1. With the rising demand for hot water (we often open a hot water tap), the tankless water heater's water flow turbine senses the flow of the water passing through and starts heating.
2. The control board that monitors the water flow turbine looks at various factors: incoming water temperature, desired water temperature as set on the temperature controller, and the calculated difference between the two.
3. The controller adjusts the gas or electric flow into the burner assembly depending on the calculated incoming and desired water temperatures.
4. It heats water to the desired temperature as it circulates through the copper heat exchanger, providing continuous hot water.
5. When the hot water tap is turned off, the tankless water heater shuts off and returns to standby mode until the next call for hot water.
Power supply requirement: These Tankless Water Heaters require 120 volts AC, 60 Hz and less than three amps. Life expectancy: The durability of a Tankless Hot Water Heater is up to 20 years. A realistic performance will vary depending on water quality, usage rates, environmental conditions, and regular maintenance.