Peerless Gas Leak at Burner or Gas Train

Boiler emits a strong gas smell near the burner compartment

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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, leaking gas valve, cracked burner manifold, improper pipe joint sealing

How to Fix / Troubleshooting

Safety first: If you smell gas strongly, do not operate electrical switches or the boiler. Evacuate the area and call the gas utility or fire department from outside.

Steps (for minor suspected leak with utility approval):

  • Shut off gas: Close the manual gas shutoff valve to the Peerless boiler.
  • Soap test: Apply a soap-and-water solution to gas joints and watch for bubbles indicating leaks.
  • Tighten or re-pipe: Tighten leaking joints or reassemble with approved gas-rated pipe dope or tape.
  • Professional test: Have a licensed technician perform a full leak test and combustion check before returning the boiler to service.
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Repair Difficulty

Professional Required 5/5

Required Part

Gas valve
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