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How Does It Work?

Navien's Condensing Tankless Water Heaters can provide an endless supply of hot water on demand because our units activate the second you open the hot water tap. Each time you turn on the faucet, shower, or other water outlet, Navien's Condensing Tankless Water heater will immediately detect the flow and begin delivering the desired hot water.

Unlike the conventional storage tank water heaters that will eventually run out of hot water, Navien's Condensing Tankless Water Heaters can deliver an endless supply because they only produce hot water when you need it which limits energy and water waste. With a Navien Tankless Water Heater, you will never have to worry about running out of hot water no matter how much you use at a single time.

Contents Index

No. Description
1 When a hot water tap is opened the unit detects the flow.
2 The flow sensor activates to determine the amount of hot water needed.
3 The igniter activates.
4 The gas control valve opens to supply the correct amount of gas.
5 The fan and venturi activate to provide the correct amount of gas and fuel.
6 The premix burner ignites providing a flame to heat the water.
7 Cold water is pre heated in the secondary heat exchanger.
8 Pre heated water passes from the secondary to the primary heat exchanger.
9 The unit determines outgoing set temperature and adjusts the flame to heat the water
10 Heated water moves to the buffer tank
11 Desired hot water amount delivered to the faucet.