Takagi Gas Leak at Heater Connections

Takagi water heater emits a strong gas smell near the unit.

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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

Loose gas union or flare fitting, Damaged gas flex connector, Improperly sealed threaded gas joint, Internal gas valve leak

How to Fix / Troubleshooting

Critical safety warning: If you smell gas, do NOT operate any electrical switches, do NOT use open flames, and evacuate the area. Turn OFF the gas supply at the main shutoff if it is safe to do so. Contact your gas supplier or emergency services.

Steps (only if safe and trained):

  • 1. Shut off gas: Close the manual gas shutoff valve to the Takagi unit.
  • 2. Ventilate: Open windows and doors to disperse gas.
  • 3. Leak test (professional): A licensed technician should apply leak detection solution to all gas joints and observe for bubbles, then repair or replace leaking fittings or gas valve as needed.
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Repair Difficulty

Professional Required 5/5

Required Part

Gas Valve Assembly
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