{"product_id":"oem-goodman-pressure-switch-10-no-for-gmh950453bxaf-20197308","title":"OEM Goodman Pressure Switch -.10\" NO for GMH950453BXAF — 20197308","description":"\u003ch2\u003eGoodman 20197308 Pressure Switch (-.10\" WC, Normally Open)\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e20197308\u003c\/strong\u003e is a genuine OEM air-proving pressure switch for the \u003cstrong\u003eGMH950453BXAF\u003c\/strong\u003e 96% AFUE two-stage gas furnace and compatible Goodman\/Amana models. This normally-open switch senses negative pressure from the induced-draft blower and closes at approximately \u003cstrong\u003e-0.10\" of water column\u003c\/strong\u003e, proving adequate venting airflow before the ignition sequence is allowed to proceed — a critical safety interlock against blocked flues or a failed draft motor.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: 20197308\u003c\/li\u003e\n\u003cli\u003eComponent Type: Air pressure \/ draft-proving switch\u003c\/li\u003e\n\u003cli\u003eTrip Setpoint: -0.10\" WC (water column)\u003c\/li\u003e\n\u003cli\u003eContact Configuration: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMH950453BXAF furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 20197308\u003c\/strong\u003e is factory-calibrated to the exact -0.10\" setpoint and contact type required by this furnace's control sequence — essential for reliable ignition and safe operation. \u003cstrong\u003eGeneric\u003c\/strong\u003e switches cost less but must match the setpoint, NO\/NC configuration, and port style precisely; a mismatch causes lockouts or unsafe operation. For a safety-critical switch, OEM is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5)\u003c\/strong\u003e — Disconnect power, note wire and hose positions, remove the mounting screw(s), and install the new switch with the tubing reconnected to the correct port. Typical time: 15–20 minutes. Verify proper sequencing on startup.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFits Goodman GMH950453BXAF. Match setpoint (-.10\") and NO configuration before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058112545139,"sku":"GOODMAN-11149","price":41.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-pressure-switch-10-no-for-gmh950453bxaf-20197308","provider":"National HVAC Parts","version":"1.0","type":"link"}