Tankless Hot Water Heaters
Heating water accounts for up to 30 percent of the average home’s energy budget. Some makers of gas-fired tankless water heaters claim their products can cut your energy costs up to half over regular storage heaters. Gas tankless water heaters, which use high-powered burners to quickly heat water as it runs through a heat exchanger, were 22% more energy efficient on average than the gas-fired storage-tank models. So, is it time to switch?
Tankless water heaters, also called instantaneous, continuous flow, inline, flash, on-demand or instant-on water heaters are gaining in popularity. These water heaters instantly heat water as it flows through the device, and do not retain any water internally except for what is in the heat exchanger coil. The main advantages of tankless water heaters are a continuous flow of hot water and energy savings (as compared to a limited flow of continuously heating hot water from conventional tank water heaters).
How Tankless Hot Water Heater's Work
When there is a demand for hot water (e.g. a hot water tap is opened for a sink, shower, tub or washing machine) the tankless water heater’s water flow turbine senses the flow and starts the heating process. The water flow turbine sends a signal to the control board which looks at multiple factors: incoming water temperature, desired water temperature as set on the temperature controller, and the calculated difference between the two temperatures. Water is heated to the desired temperature as it circulates through the copper heat exchanger providing continuous hot water. When the hot water tap is turned off, the tankless water heater shuts down and is placed in a standby mode pending the next call for hot water.
In short:
- Tankless water heaters are more energy efficient & require less maintenance; and
- Tankless water heaters take up less space in the home & are less of an eyesore.
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