Kenmore Mineral Buildup or Water Quality Issue

Brewed coffee has a metallic or mineral taste.

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Possible Causes

Hard water scale in heater, High mineral content in tap water, Old carbon filter in reservoir, Corroded internal metal surfaces

How to Fix / Troubleshooting

Safety first: Unplug before descaling.

  • Descale thoroughly: Run a full descaling cycle with vinegar or descaler, then flush with fresh water.
  • Replace water filter: If your Kenmore model uses a charcoal water filter in the reservoir, replace it according to the manual.
  • Use filtered or bottled water: Switching to filtered water can significantly reduce mineral taste.
  • Inspect heater (advanced): If accessible, inspect the heater block for heavy corrosion. Replace the heater assembly if severely pitted.
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Repair Difficulty

Easy 2/5

Required Part

Water Filter Cartridge / Heating Block
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