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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM safety switch designed for the GCH950703BXAD 95% AFUE gas furnace and compatible Goodman/Amana models. This high-limit control continuously monitors heat-exchanger temperature and shuts down the burners if the furnace overheats — protecting the heat exchanger, blower, and your home from unsafe conditions. A failing limit switch is a common cause of short-cycling and no-heat calls, making this an essential replacement part.
The genuine Goodman 20162904 is calibrated to the exact trip temperature specified for your furnace model. Generic limit switches often carry the wrong temperature rating or mounting footprint, which can allow dangerous overheating or nuisance shutdowns. For a safety-critical component, OEM is strongly recommended.
Rating: Moderate (3/5). Replacement involves disconnecting wiring and unmounting the switch from the heat-exchanger panel. Always cut power and gas first. Because this is a safety control, professional installation by a licensed HVAC technician is recommended.