How to Fix / Troubleshooting

Safety: Immediately switch off power and close the cold water inlet. A ruptured tank can fail catastrophically.

Steps:

Identify leak location: If water is seeping from welded seams or through the insulation at the top/side, the inner tank is likely perforated.
Do not attempt welding: Household repair of a pressurized enamelled tank is unsafe and not recommended.
Drain and decommission: Drain the heater completely and disconnect electrical and plumbing connections.
Replace unit: Install a new Eldom water heater of appropriate capacity. Ensure the magnesium anode is checked periodically to extend tank life.

This fault is not economically repairable; replacement is the only safe option.

Water heater leaks from the top or side, with rust stains on the jacket.

Possible Causes