Should You Turn Off Tankless Water Heater When on Vacation?

By Michael Ferguson

If you’re planning to go on a vacation, you might be wondering whether or not you should turn off your tankless water heater. This is a common question that many homeowners have, and the answer is not always straightforward. In this article, we’ll explore some of the factors that can help you make an informed decision.

What is a Tankless Water Heater?

Before we dive into the question of whether or not to turn off your tankless water heater when on vacation, let’s first define what it is. A tankless water heater is a type of water heating system that heats water only when it’s needed, rather than storing hot water in a tank like traditional systems. They’re often more energy-efficient than traditional systems because they don’t waste energy by constantly heating and reheating stored water.

The Case for Turning Off Your Tankless Water Heater

One argument for turning off your tankless water heater when you’re on vacation is that it can save energy and money. Even though these systems are already more energy-efficient than traditional models, they still use electricity or gas to operate. If nobody will be using hot water while you’re away, there’s no point in keeping the system running and wasting energy.

Other Benefits of Turning Off Your Tankless Water Heater

In addition to saving energy and money, turning off your tankless water heater can have other benefits as well. For example:

  • Reducing wear and tear on the system: Every time your tankless water heater turns on and off, it goes through a cycle that can cause wear and tear on the system over time.
  • Preventing leaks: If there’s no hot water flowing through your pipes while you’re away, there’s less chance of leaks developing.
  • Avoiding damage from power surges: If your home experiences a power surge while you’re away, it could damage your tankless water heater. Turning it off can help prevent this.

The Case Against Turning Off Your Tankless Water Heater

On the other hand, there are also some arguments against turning off your tankless water heater when you’re on vacation. One of the main concerns is that turning it off could cause damage to the system.

Potential Issues with Turning Off Your Tankless Water Heater

When you turn off your tankless water heater, the water inside the system can cool down and potentially cause problems. For example:

  • Freezing: If you live in a cold climate, turning off your tankless water heater could cause the pipes to freeze and burst if temperatures drop too low.
  • Bacterial growth: If stagnant water sits in your tankless water heater for an extended period of time, it could develop bacterial growth that can be harmful to your health.
  • Mineral buildup: When hot water is not flowing through your pipes, minerals can build up and potentially cause damage to the system over time.

So, Should You Turn Off Your Tankless Water Heater When on Vacation?

Ultimately, whether or not to turn off your tankless water heater when on vacation depends on a few factors. If you live in a warm climate and have someone checking on your home regularly while you’re away, it might make sense to turn off the system to save energy and money. However, if you live in a cold climate or are worried about potential damage from stagnant water, it might be better to leave the system running at a lower temperature.

Tips for Leaving Your Tankless Water Heater Running While on Vacation

If you decide to leave your tankless water heater running while you’re on vacation, there are a few tips to keep in mind:

  • Lower the temperature: Lowering the temperature on your tankless water heater can help conserve energy while still keeping the system running.
  • Have someone check on your home regularly: If possible, have someone check on your home at least once a week to make sure everything is running smoothly.
  • Flush the system upon return: When you return from vacation, consider flushing the system to remove any stagnant water that may have developed during your absence.

Conclusion

In summary, whether or not to turn off your tankless water heater when on vacation depends on a few different factors. While turning it off can save energy and money, it can also potentially cause damage to the system. Ultimately, it’s up to you to weigh the pros and cons and make an informed decision based on your specific situation.