{"product_id":"oem-goodman-pressure-switch-37-wc-no-for-gmh950453bxac-20197312","title":"OEM Goodman Pressure Switch -.37\" WC NO for GMH950453BXAC — 20197312","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman 20197312 Pressure Switch\u003c\/strong\u003e is a genuine OEM air-proving switch for the \u003cstrong\u003eGMH950453BXAC\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. Factory-set at \u003cstrong\u003e-0.37\" WC\u003c\/strong\u003e and wired \u003cstrong\u003enormally open\u003c\/strong\u003e, it confirms proper induced-draft airflow before allowing ignition. If the inducer isn't pulling adequate draft — due to a blocked flue, clogged condensate trap, or failed switch — the burners stay locked out to prevent unsafe operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart Type: Air-Proving Pressure Switch\u003c\/li\u003e\n\u003cli\u003eTrip Point: -0.37\" WC (water column)\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMH950453BXAC and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 20197312\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman \/ Amana\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM 20197312 is calibrated to the exact -0.37\" WC set point your furnace's inducer and venting were engineered for. A generic switch with a different trip pressure can cause nuisance lockouts or bypass a genuine draft problem. For this safety interlock, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy\u003c\/strong\u003e — mounts with one or two screws, a single hose to the inducer port, and spade terminals. Cut power first and verify the hose is free of moisture. About 10–15 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058111431027,"sku":"GOODMAN-11113","price":32.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-pressure-switch-37-wc-no-for-gmh950453bxac-20197312","provider":"National HVAC Parts","version":"1.0","type":"link"}