Rheem Tank Corrosion / Internal Tank Leak

Rheem water heater leaks water from the bottom of the tank

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed glass lining due to age, Severely depleted anode rod, Excessive water pressure or thermal expansion, Corrosive water conditions

How to Fix / Troubleshooting

Safety first: Turn OFF power or gas and close the cold water supply valve. Hot water can cause burns.

  • Confirm source: Dry the area and inspect. If water is seeping from the tank shell or insulation, the inner tank is leaking.
  • Check fittings: Rule out leaks from drain valve, T&P valve, or plumbing connections above before condemning the tank.
  • Relieve pressure: Open a hot water tap and carefully open the drain valve to lower water level and pressure.
  • Replacement: A leaking tank cannot be reliably repaired. Plan to replace the water heater. Consider installing an expansion tank and new anode rod to extend life of the new unit.
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Repair Difficulty

Hard 4/5

Required Part

Water Heater Tank
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