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Flame Rollout Switch

What is a flame rollout switch?

The flame rollout switch is a critical safety component of a gas furnace. It operates by turning off the furnace if flames start to escape and "roll out" to the burners creating a fire hazard.

Where is it located?

The flame rollout switch is located on the burner assembly housing directly above the burners.

Maintenance Tips

  • Clean the burners and remove any debris every 3 months
  • Replace the air filter to prevent overheating every 3 months
  • Check and replace if needed the sensor every 3 months
  • Make sure the heat exchanger isn't cracked every 3 months
  • Make sure the exhaust flue pipe is free from obstruction every 3 months

    • Lifespan

    The lifespan of the flame rollout switch is 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.