{"product_id":"oem-goodman-37-wc-no-pressure-switch-for-gmh950905dxac-20197312","title":"OEM Goodman -.37\" WC NO Pressure Switch for GMH950905DXAC — 20197312","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20197312 Air Pressure Switch\u003c\/strong\u003e is a genuine OEM safety control for the Goodman \u003cstrong\u003eGMH950905DXAC\u003c\/strong\u003e gas furnace. Rated at \u003cstrong\u003e-.37 in. WC (normally open)\u003c\/strong\u003e, it senses negative pressure created by the inducer\/draft blower and confirms that combustion venting is clear before the control board allows ignition. If the vent is blocked or the inducer fails, the switch stays open and safely prevents the burners from firing.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Air proving \/ vent pressure switch\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20197312\u003c\/li\u003e\n\u003cli\u003eSet point: -.37 in. water column (WC)\u003c\/li\u003e\n\u003cli\u003eAction: Normally Open (NO), closes on pressure\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMH950905DXAC (95% AFUE furnace)\u003c\/li\u003e\n\u003cli\u003eFit: Direct OEM replacement — factory tubing port\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePressure switches are calibrated to an exact set point. The OEM 20197312 is factory-matched to the -.37\" WC trip value this furnace requires; installing a generic switch with a different rating causes chronic ignition lockouts, short cycling, or — worse — bypassed safety limits. For a life-safety combustion control, always use the correctly rated OEM part.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Roughly 15–25 minutes. Cut power, photograph the wiring, transfer the two spade terminals and the sensing hose to the new switch, then mount it. Confirm the hose is fully seated and free of condensate before restarting — a kinked or wet hose is the most common cause of a false open.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058122310003,"sku":"GOODMAN-11441","price":32.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-37-wc-no-pressure-switch-for-gmh950905dxac-20197312","provider":"National HVAC Parts","version":"1.0","type":"link"}