Sime Corrosion / Long-Term Leakage

Water heater shows signs of corrosion or rust stains around connections and casing.

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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

Slow seep from joints, Condensate dripping on metal parts, Poor flue condensate drainage, Aggressive water chemistry

How to Fix / Troubleshooting

Safety: Turn off power and gas if corrosion is near structural or gas-carrying components.

Steps:

  • Identify moisture source: Look for damp insulation, wet joints, or condensate tracks.
  • Clean and dry: Remove rust flakes and dry the area. Apply anti-corrosion spray to affected metal surfaces (avoid sensors and electronics).
  • Check condensate system: Ensure the condensate trap and hose are not leaking and are correctly routed.

Professional help: Structural corrosion of the heat exchanger or flue components requires professional assessment and likely replacement.

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Repair Difficulty

Medium 3/5

Required Part

Condensate Trap / Pipework Joints
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