Lochinvar Gas Leak or Incomplete Combustion

Heater emits a strong gas smell around the unit, especially at startup.

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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, Cracked gas manifold, Misaligned burner, Delayed ignition causing gas buildup

How to Fix / Troubleshooting

Emergency Safety: If you smell raw gas strongly, shut off the gas supply at the manual shutoff valve, turn off power, evacuate the area, and contact your gas supplier or fire department. Do not operate electrical switches or create sparks.

Do not attempt repairs on the gas train yourself. A licensed gas technician must leak-test all joints, inspect the burner and manifold, and correct any combustion issues.

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Repair Difficulty

Professional Required 5/5

Required Part

Gas Manifold / Gas Valve Assembly
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