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The Goodman 0130F00000P is a factory-original air-proving pressure switch calibrated at -1.10" WC (Sun Gold) for the GMS950905DXA gas furnace. This safety switch confirms that the induced-draft blower is producing adequate negative pressure before the control board allows ignition. A failed or out-of-calibration pressure switch is one of the most common causes of no-heat calls, flashing fault codes, and repeated ignition lockouts.
Pressure switches must match the exact -1.10" WC trip point for your furnace. This genuine Goodman OEM switch is factory-calibrated, so it proves draft correctly without nuisance faults or unsafe firing. Generic switches with the wrong setpoint can either lock out a healthy furnace or allow ignition under poor-draft conditions — a safety risk. Always match the OEM specification.
Easy (2/5). Turn off power, note the hose and wire connections, swap the switch, and reconnect. Replacement typically takes 15–20 minutes. Confirm the correct pressure hose routing and test for proper sequencing before returning the unit to service.