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The Goodman 20162904 is a genuine OEM primary high-limit temperature control designed for the AMS950904CXA gas furnace. This automatic-reset safety switch continuously monitors heat exchanger temperature and shuts off the burners if the furnace overheats — a critical protection against restricted airflow, dirty filters, or blower failure. A failed limit switch is a common cause of short-cycling and no-heat conditions.
Genuine Goodman limit controls are calibrated to the precise open/close temperature setpoints your furnace's control board expects. Generic replacements may trip at the wrong temperature, causing nuisance shutoffs or, worse, failing to protect the heat exchanger. For a safety-critical component, we strongly recommend the OEM part.
Easy to Moderate (2/5). Disconnect power at the furnace, remove the two mounting screws and wire leads, and install the replacement in the same orientation. Basic hand tools and a nut driver are all that's required. Confirm the furnace cycles normally after replacement.