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Genuine OEM Lennox 25M60 flame rollout switch. This manual-reset safety limit switch monitors for flames escaping the burner box or heat exchanger and immediately shuts off the gas valve if dangerous rollout is detected. It is a critical safety device that protects your Lennox furnace, surrounding components, and your home from overheating and fire hazards.
A tripped or failed rollout switch is often signaled by a furnace that ignites briefly then shuts down, no heat despite a call for warmth, or a switch that will not reset. Frequent tripping can also point to an underlying issue such as a cracked heat exchanger, blocked flue, or restricted airflow that should be inspected by a qualified technician.
Using the OEM 25M60 is essential for Lennox equipment because this switch is calibrated to a specific trip temperature and mounting location. Substituting a non-OEM part with a different rating can compromise this life-safety function. The genuine factory switch ensures the correct temperature threshold, proper fit, and reliable protection for your furnace.