John Wood
Tank Corrosion / Inner Tank Rupture
John Wood water heater tank is leaking from the side or bottom; rust stains visible
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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, Depleted anode rod, Aggressive water chemistry, External corrosion from leaks
How to Fix / Troubleshooting
Safety: A leaking tank can rupture. Turn off power or gas and close the cold water supply immediately.
- 1. Confirm source: Dry the exterior and observe where water reappears. If it seeps from under the jacket or weld seams, the inner tank is compromised.
- 2. Shut down: Turn off the cold water supply and open a hot faucet to relieve pressure. Drain the tank if necessary to prevent further leakage.
- 3. Replacement: The tank is not repairable. Plan to replace the entire John Wood water heater.
- 4. Preventive step: On the new heater, periodically inspect and replace the anode rod to extend tank life.
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Repair Difficulty
Professional Required
5/5
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