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The 0130F00038 is a genuine OEM auxiliary limit switch (light blue) engineered for Goodman GCH950453BXAD gas furnaces. This normally-closed thermal safety device monitors heat-exchanger and vestibule temperatures, automatically interrupting the burner circuit if the furnace overheats and closing again once safe operating temperature is restored. It is a critical protective component—running a furnace without a properly functioning limit switch risks heat-exchanger damage and unsafe operation.
Our OEM Goodman switch is calibrated to the exact factory trip and reset temperatures for your model, ensuring correct safety response. Generic replacements may use approximate temperature ratings that cause nuisance lockouts or fail to trip at the designed setpoint. For a safety component, we recommend the OEM part.
Easy (2/5). A two-wire spade-terminal swap for anyone comfortable working inside a furnace cabinet. Always shut off power and gas before servicing.