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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM safety component engineered for the GCG300360EBXXXAA packaged gas/electric furnace and compatible Goodman/Amana models. This primary high-limit switch continuously monitors heat-exchanger temperature and cuts power to the gas valve if the furnace overheats — a critical protection against cracked heat exchangers and unsafe operation.
This is a factory OEM Goodman part with the exact trip temperature and mounting spec your furnace was designed around. Generic limit switches often carry approximate trip points and may nuisance-trip or fail to protect the heat exchanger. The OEM control guarantees correct calibration and a clean, no-guesswork installation.
Easy (2/5). A DIY-friendly swap for the mechanically inclined — disconnect power, remove two mounting screws, transfer the wire leads, and reinstall. Always shut off gas and electrical power before servicing. Professional installation recommended if you are unsure.