If you experience a power outage, your Rinnai Tankless Water Heater will not operate. However, the Hugo X-1 Battery Backup, designed specifically to run your Rinnai tankless unit without power for multiple days, will also keep your computer or cellphone powered until power is restored. ... Yes, you still have hot water.

Do tankless water heaters work in a power outage?

While on-demand gas water heaters don't rely on electricity as a fuel source to heat water, on-demand heaters usually have a control panel that is powered by electricity which is the 'brains' of the water heater. So even a tankless gas water heater will not work independently in a power outage.

Do Rinnai heaters need electricity?

We don't make an electric model, because there are several potential drawbacks to electric tankless water heater units. ... Even with propane, gas tankless water heaters are considerably less expensive to operate than those that run on electricity.