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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM high-limit safety switch for the ACVC950714CXAC gas furnace and compatible Goodman/Amana models. Mounted on the heat exchanger or burner bulkhead, it continuously monitors plenum temperature and opens the circuit to shut off the burners if the furnace overheats — protecting the heat exchanger and your home from unsafe conditions. A failed limit control is a common cause of short cycling or a furnace that won't fire.
This genuine Goodman OEM limit control is factory-calibrated to the exact trip temperature your furnace was certified with. Generic limit switches may have different set points or mounting footprints, which can cause nuisance tripping or, worse, fail to protect the heat exchanger. For a safety device, OEM calibration is not optional.
Moderate. Replacement involves disconnecting two wire leads and removing mounting screws, but correct positioning against the plenum matters. Shut off gas and power before servicing. We recommend a qualified HVAC technician for safety-circuit components. Estimated time: 30–45 minutes.