Electrolux Bacterial Contamination / Anode Reaction

Water from heater has a rotten egg or sulfur smell

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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

Reaction between magnesium anode and sulfur bacteria, Stagnant water in tank, Low water usage

How to Fix / Troubleshooting

Safety first: Turn OFF power and allow water to cool before treatment.

Steps:

  • 1. Disinfect tank: Drain the tank partially, then follow Electrolux or plumbing guidelines to shock the system with a chlorine solution. Flush thoroughly afterward.
  • 2. Replace anode rod: Consider replacing the magnesium anode with an aluminum-zinc anode designed to reduce odor.
  • 3. Increase temperature temporarily: Raising the tank temperature (within safe limits) for a short period can help kill bacteria. Use caution to avoid scalding and return to normal settings afterward.

Note: Persistent odor may require water treatment for the entire home supply.

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Repair Difficulty

Medium 3/5

Required Part

Anode Rod (Aluminum-Zinc Type)
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