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Burner Assembly

What is the burner assembly?

A burner assembly is the core component in a gas furnace where air and gas are ignited to produce heat. It generally includes:

  • Eelectrode Igniter: Ignites the pilot light
  • Burner: Where the gas burns
  • Orifice: Controls the amount of gas sent to the burner
  • Pilot tube: Supplies gas to pilot light
  • Thermocouple or Flame Sensor: Detects if the flame is burning and turns off gas when it goes out

    • Where is it located?

    The burner assembly is located at the bottom of the furnace behind a small door.

    Maintenance Tips

  • Clean Burners with wire brush for rust and debris annually
  • Clean electrode on igniter with small brush and alcohol annually
  • Clean orifice with a paperclip annually

    • Lifespan

    The lifespan of the burner assembly 10 - 15 years.

    This site is a structured reference describing common residential system failures, typical repair ranges, and replacement thresholds based on typical service conditions.