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How to fix overheating in a tankless water heater

If you have a tankless water heater that you suspect of overheating, it is likely caused by one of three basic problems (in order of likely occurrence):

  1. The thermostat is incorrectly set: you should check the setting of the thermostat and make sure it is correctly and safely set.
  2. The thermostat has malfunctioned: if you determine that the thermostat is correctly set but the unit is still overheating, you should call a professional to ensure that the thermostat itself is not broken and that it is sensing temperatures correctly.
  3. Something has gone awry with the heating element itself: again this is a job for a professional.

So if the thermostat is set correctly, our suggestion would be to call a professional as they will likely use more sophisticated knowledge and diagnostic tools than available to an average homeowner.

Filed Under: Repair and Maintenance Tagged With: tankless overheating

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