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The Goodman 20162904 Primary Limit Temperature Control is a genuine OEM safety switch for the Goodman GCH950704CXAD gas furnace. This primary high-limit control continuously senses supply-air temperature over the heat exchanger and opens the circuit to shut off the gas valve if the furnace overheats — protecting the heat exchanger from cracking and preventing unsafe operation. It is the furnace's main line of defense against restricted airflow from a dirty filter, blocked ducts, or a failing blower.
The OEM 20162904 is factory-calibrated to the exact trip and reset temperatures specified for your furnace, with a guaranteed mounting and terminal match. Our generic equivalent meets the same ratings at a lower price for value repairs. Both restore full overheat protection.
Easy (2/5). Typically two screws and two spade terminals. Before replacing, rule out airflow problems — a repeated limit trip is usually a symptom, not a failed switch. Always shut off power and gas first. Professional diagnosis recommended.