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The Goodman 20197308 is a genuine OEM air pressure switch engineered for the GMV950905DXA two-stage, variable-speed 96% AFUE gas furnace. This normally-open switch monitors negative pressure across the inducer/venting path and proves adequate draft before the ignition sequence begins. A failed or drifting pressure switch is one of the most common causes of a furnace that clicks, tries to light, then locks out — replacing it with the correct -.10" WC set point restores safe, reliable ignition.
This is a factory-authentic Goodman component with the exact calibrated set point and hose/electrical fitment your furnace was designed around. Generic universal switches often require adapter tubing and may trip at the wrong pressure, causing nuisance lockouts. For a safety-critical draft-proving device, we recommend the true OEM part.
Moderate — swap the two spade terminals and the sensing hose onto the new switch, then confirm the furnace proves and fires. Always cut power at the disconnect first. Best performed by a qualified HVAC technician.