How to Operate Tankless Water Heaters

Tankless water heaters save money on water heating costs.

Tankless water heaters save money and energy because, unlike with standard tank water heaters, the water does not sit in the tank needing constant heating. With a tankless water heater, the water is heated only on an as-needed basis. Several companies make tankless water heaters, giving consumers dozens of models and features to choose from. The basic operation and functions are relatively the same for each tankless water heater.

Things You'll Need

• Tankless water heater controls

Instructions

1. Set the water temperature to the maximum temperature you want the water heated to. The heater will have a screen or remote that allows you to change the temperature setting with the push of a button. Look for the up and down arrows, + or -- buttons, or the "H" or "Hot" button to adjust the temperature.

2. Turn the hot water faucet on all the way to signal the tank to heat the water. It may take up to 20 seconds for the water to become hot.

3. Use the on and off buttons to turn the heater on or off. Usually you will only need to turn the unit off for repairs or adjustments; you may want to turn the unit off during extended vacations.

References

• Extreme How-To: Up Close with Tankless Water Heaters
• Rinnai Manual: Direct Vent Tankless Water Heater