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FAQ: Can tankless hot water heaters freeze?

Still, the tankless hot water heater can freeze if certain precautions are not taken when the temperatures drop below a certain level. Most indoor and outdoor tankless water heaters have built-in freeze protection against temporary winter temperatures ranging from -5 degrees Fahrenheit to -22 degrees Fahrenheit.

How do I keep my tankless water heater from freezing outside?

How to Prevent Your Tankless Water Heater from Freezing

  1. Install Your Water Heater in a Warm Place.
  2. Drain Your Water Heater.
  3. Maintain a Power Source.
  4. Consider a Recirculation System.
  5. Insulate, Insulate, Insulate.
  6. Run a Trickle of Water.

What do you do when your tankless water heater freezes?

How to Thaw a Frozen Tankless Water Heater

  1. CLOSE the Gas and Water Shutoff Valves and turn OFF the Electrical Power.
  2. Allow the tankless unit to thaw.
  3. Carefully inspect the external pipes, internal components, and the plumbing for leaks.
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How do I know if my tankless water heater is frozen?

Check if the water heater itself is frozen or if it’s just the pipes leading in and out of the unit. This will often be the case. You can check by simply touching the water heater to find the spot where it’s ice cold.

How do you winterize a tankless hot water heater?

Tankless winterization by removing and draining the unit

  1. Switch off circuit breakers.
  2. Turn off water and drain your lines.
  3. Disconnect inlet and outlet connections from your tankless (water may leak out at this time so be prepared with a bucket or rags)

Is a tankless water heater good for cold climates?

Yes, gas tankless water heaters can work well, even in cold climates, as long as the unit has been sized correctly to meet the hot water needs of your particular household.

Can an outdoor tankless water heater be installed in a garage?

As long as enough combustion air is provided, tankless water heaters can be installed in place of your old water heater or anywhere in your home. This includes utility rooms, garages, basements, attics, or mounted on outside walls.

How do you unfreeze a tankless hot water heater?

How to Thaw a Frozen Tankless Water Heater

  2. Turn OFF the electrical power and CLOSE the gas and water shutoff valves.
  3. Wait for the tankless unit to thaw.
  4. Check the external plumbing and internal parts and pipes for leaks.
  5. If you spot a leak, you should contact a professional plumber.
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Can you connect PEX to tankless water heater?

PEX tubing may be connected directly to residential electric tank or tankless (instantaneous) water heaters, if the local code and manufacturer’s instructions allow. When connecting PEX tube to gas tank or tankless water heaters, the tube must be kept at least 6 inches away from the exhaust vent of the heater.

What happens if a water heater freezes?

The greatest freezing danger for tankless water heaters is standing water expanding inside the unit. When water freezes and expands, it can exert a force of almost 40,000 psi to the afflicted area, and can split almost any plumbing material if it cannot expand enough to absorb the force.

How long do tankless water heaters last?

Most tankless water heaters have a life expectancy of more than 20 years. They also have easily replaceable parts that may extend their life by many more years. In contrast, storage water heaters last 10–15 years.

Why does the tankless water heater go cold?

This can be caused by: A plumbing system crossover where there shouldn’t be one. Improperly lengthened venting pipes. Damaged flow sensor—something that should be checked during your annual plumbing maintenance appointment. A dirty water filter on the cold water inlet.

Can you drain a tankless water heater for the winter?

One of the main steps when winterizing an unattended tankless heater is to drain and unplug the unit. If there is no water in the heater’s pipes, especially in the heat exchanger, the unit will not be damaged due to the freezing conditions.

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Is it safe to cover a tankless water heater?

You can enclose it somewhat. it has to be able to breathe and you have to be able to service it. On idea would be an “L” shaped screen that hinged on a wall and hinged again on the “L”.

Will a tankless water heater increase home value?

If you are looking to increase the value of your home, adding a tankless water heater to your features is a great place to start. According to a study conducted by Zillow, homes with tankless water heaters sold for 4% more than their expected value. On average, these homes also sold 43 days faster than expected.

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