How A Tankless Water Heater Works
By now you’ve heard of the tankless water heater. Hot water on demand! But do you know how it works and how it can replace your large tanked water heater?
Cold Water Enters (1)
The instant the hot water faucet is turned on, it starts the process of heating the water. The unit will allow the water to pass through in order to heat it. Unlike tanked water heaters, the tankless doesn’t store hot water ready to be used when needed. Keeping a tank of water hot and reheating it periodically uses a lot of energy (you can save almost as much as 20% from your energy bill)!
Flow Sensor (2)
After water enters the unit, the flow of water goes past the flow sensor which detects the water. It then sends a signal to the computer that water needs to be heated.
Computer & Burner (3)
At this point the computer turns on the fan to bring in air from the outside. It also opens the gas valve to let in the gas to ignite the burner.
Heat Exchanger (4)
A heat exchanger is a device that allows heat from a liquid or a gas to pass to a second liquid or gas without the two having to mix together or come into direct contact. In this case, it captures heat from the burner and transfers it to the water passing through the exchanger system. It will heat the water to the preset temperature on the tankless water heater. From there the hot water goes out of the faucet that was turned on.