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The Goodman 0130F00038 is a genuine OEM auxiliary (high) limit switch designed for the GDH80403ANAA gas furnace and compatible Goodman/Amana models. This light-blue thermal safety control monitors heat-exchanger and plenum temperature, opening the circuit to shut down the burners if the furnace overheats — protecting the equipment and your home from unsafe operating conditions.
The OEM Goodman switch is calibrated to the exact trip temperature specified for your furnace, ensuring correct burner cutout and warranty compliance. Aftermarket generics may use a different trip point or reset behavior, which can cause nuisance shutdowns or fail to protect the heat exchanger. For a safety-critical control, OEM is strongly recommended.
Easy (1/5). Two-wire spade connection and a single mounting screw. Always disconnect power before servicing. If you are unsure of the correct switch location or trip rating, consult a licensed HVAC technician.