{"product_id":"oem-goodman-30-75-in-wc-combination-pressure-switch-for-amv90453bxbb-11177113","title":"OEM Goodman -.30\/-.75 in. WC Combination Pressure Switch for AMV90453BXBB — 11177113","description":"\u003ch2\u003eGoodman 11177113 Combination Pressure Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003e11177113\u003c\/strong\u003e is a genuine OEM dual-stage combination pressure switch engineered for the \u003cstrong\u003eAMV90453BXBB\u003c\/strong\u003e variable-speed condensing furnace and other compatible Goodman\/Amana 90%+ AFUE models. This gray-bodied switch monitors negative draft pressure across the induced-draft blower and heat exchanger, proving safe venting before the ignition sequence is allowed to proceed. A failed pressure switch is one of the most common causes of a furnace that ignites briefly and then locks out.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Combination (dual) negative pressure switch\u003c\/li\u003e\n\u003cli\u003eTrip points: -.30\" WC and -.75\" WC (inches water column)\u003c\/li\u003e\n\u003cli\u003eHousing color: Gray\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace (condensing \/ 90%+ AFUE)\u003c\/li\u003e\n\u003cli\u003eFit: AMV90453BXBB and compatible Goodman\/Amana models\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: 11177113\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 11177113\u003c\/strong\u003e ships with factory-calibrated trip pressures and the correct terminal and tube-port configuration, guaranteeing an exact fit and reliable safety operation. Generic aftermarket switches may carry similar pressure ratings but frequently differ in bracket geometry, port orientation, or calibration tolerance — leading to nuisance lockouts. For a listed safety component, the OEM part is strongly recommended.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Requires shutting off power and gas, transferring the rubber sensing tubes to matching ports, and reconnecting the wiring harness. No specialty tools needed, but correct tube routing is essential. HVAC technician recommended for warranty and safety.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057823924595,"sku":"GOODMAN-7735","price":79.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-30-75-in-wc-combination-pressure-switch-for-amv90453bxbb-11177113","provider":"National HVAC Parts","version":"1.0","type":"link"}