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Troubleshoot and Repair a Gas Water Heater

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PROBLEM: Rotten Egg Smell

Rotten Egg Smell

Possible Causes

  • Bacteria in the tank sediment fed from hydrogen gas created from decay of sacrificial anode.


Possible Repairs

  • Flush water heater
  • Using a hydrogen peroxide solution of 2 pints 3% peroxide to 40 gallons of water, treat tank and run some of the solution into water lines.
  • Let peroxide solution set in tank and pipes for 2 hours. Solution is not toxic and requires no rinsing.
  • If problem persists, replace anode with a zinc-alloy anode.
  • If problem still remains, replace water heater with a plastic lined tank type.

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