Stiebel Eltron tankless water heaters require minimal maintenance compared to traditional storage tanks, but routine upkeep remains essential to ensure optimal performance and longevity. In regions with hard water, the internal heating elements and flow channels should be periodically inspected and descaled to prevent calcium mineral buildup. Additionally, homeowners should regularly check and clean the inlet water mesh screen filter to maintain unobstructed water flow and protect the sensitive electronic flow sensors.
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