Water heater emits rotten egg or sulfur smell from hot water taps

Safety first: The odor is unpleasant but typically not dangerous. Use gloves and eye protection when handling chemicals.

• Flush tank: Drain and flush the Giant water heater thoroughly to remove stagnant water.
• Disinfect: Follow Giant’s procedure to disinfect the tank, often using a diluted hydrogen peroxide solution introduced through the hot outlet or T&P port.
• Replace anode rod: Consider replacing the magnesium anode rod with an aluminum/zinc anode rod designed to reduce odor. Use a proper socket and breaker bar to remove the old anode.
• Maintain temperature: Keeping the tank at 60°C (140°F) with a mixing valve can help reduce bacterial growth (ensure scald protection at fixtures).