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The Goodman B1370154 is a genuine OEM flame rollout limit switch rated at 350°F for the GDT045-3 gas furnace. Mounted near the burner assembly, this manual-reset safety device instantly shuts off the gas valve if flames roll out of the burner box — a condition typically caused by a blocked heat exchanger, cracked flue, or inadequate combustion air. It is a life-safety component that guards against fire and dangerous combustion faults.
Because it protects against flame rollout, exact calibration is non-negotiable. The OEM B1370154 trips at the engineered 350°F threshold. If your rollout switch has tripped, replace the switch and diagnose the root cause (blockage, dirty burners, or venting fault) before returning the furnace to service. Never bypass a rollout switch.
Easy (1 of 5) to physically install, but diagnosis is critical. Cut gas and power first. Recommended that a licensed HVAC technician verify the cause of any rollout event.
Stay protected with the genuine Goodman B1370154 350°F rollout switch — order now for fast shipping.