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  • Bonna R.

How to Descale or Flush A Tankless Water Heater

A Tankless water heater needs maintenance. Tankless water heater manufacturers recommend their units be flushed at least once a year to eliminate the buildup of calcium and other minerals within the unit -- even more often if you have hard water. Some units will indicate when the unit is in need of flushing. You can flush out a tankless hot water heater in about one hour.

Noritz NR83DVC
Noritz NR83DVC

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