{"product_id":"oem-goodman-0-37-wc-pressure-switch-for-gmh950905dxaa-20197312","title":"OEM Goodman -0.37\" WC Pressure Switch for GMH950905DXAA — 20197312","description":"\u003cp\u003eThe Goodman \u003cstrong\u003e20197312 Pressure Switch\u003c\/strong\u003e is a genuine OEM draft-proving control for the \u003cstrong\u003eGMH950905DXAA\u003c\/strong\u003e 95% AFUE two-stage furnace and compatible Goodman\/Amana models. This normally-open switch monitors inducer draft and closes at a \u003cstrong\u003e-0.37\" water column\u003c\/strong\u003e setpoint, confirming proper venting and combustion airflow before the ignition sequence is allowed to proceed — a critical safety interlock against blocked vents or a failing inducer.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20197312\u003c\/li\u003e\n\u003cli\u003eSetpoint: -0.37\" WC (water column)\u003c\/li\u003e\n\u003cli\u003eAction: Normally Open (NO), closes on draft\u003c\/li\u003e\n\u003cli\u003eFunction: Inducer \/ draft-proving pressure switch\u003c\/li\u003e\n\u003cli\u003eCompatible Model: GMH950905DXAA and related Goodman\/Amana furnaces\u003c\/li\u003e\n\u003cli\u003eEquipment: High-Efficiency Gas Furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003ePressure-switch calibration is safety-critical. This \u003cstrong\u003efactory-original Goodman switch\u003c\/strong\u003e is set precisely to -0.37\" WC with the correct port and bracket. Generic switches with even slightly off setpoints cause intermittent ignition lockouts or, worse, defeat the venting safety check. OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — one mounting bracket, a single tubing connection, and two spade terminals. Disconnect power first and confirm the hose is free of condensate before restarting.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058121458035,"sku":"GOODMAN-11417","price":49.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-0-37-wc-pressure-switch-for-gmh950905dxaa-20197312","provider":"National HVAC Parts","version":"1.0","type":"link"}