What is a Tankless Water Heater?
Point of use water heaters are water tankless water heaters, activated by water flow. These heaters, also called on demand water heaters — heat water only as it is used, or on demand. A tankless unit has a heating device that is activated by the flow of water when a hot water valve is opened. Once activated, the heater delivers a continuous supply of hot water.
ANSWER Tankless water heaters (aka, instantaneous or on-demand water heaters), heat water only as it is demanded. Traditional tank type water heaters constantly work to heat water, producing standby heat loss, which is very costly. Think of your car. You dont keep it running all night long to use for your morning drive to work. When hot water is turned on at the source, cold water travels through a pipe into the tankless unit. In a gas-fired Paloma tankless water heater, a gas burner heats the water. As a result, tankless water heaters supply a constant flow of hot water and when sized correctly they may supply enough hot water for simultaneous, multiple uses in both households and commercial applications.