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Boiler Smell of exhaust
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- Check the flue venting and exhaust pipe for any blockages or leaks that could allow exhaust gas back into the building.
- Inspect the burner assembly and heat exchanger for cracks or damage that may be leaking exhaust.
- Make sure the draft inducer fan is operating properly to vent fumes. Replace if worn out or spinning slowly.
- Clean the burner nozzle assembly if sooty buildup is present. Soot can restrict exhaust flow.
- Verify there is adequate make-up combustion air getting to the boiler room. Open vents if restricted.
- Have a technician adjust the air-fuel mixture by checking the fuel pressure and nozzle size. Too rich causes incomplete combustion.
- Test the boiler exhaust with a combustion analyzer to check for high CO levels. Tune the burner if needed.
- Consider upgrading old boiler smoker exhaust piping to sealed pipe design to prevent exhaust leaks.
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‘How-To’ Videos > Interior Home > Mechanical Room > Aquastat Relay
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