{"product_id":"oem-goodman-30-75-in-wc-pressure-switch-for-amvc950453bxaa-11177113","title":"OEM Goodman -.30\/-.75 in WC Pressure Switch for AMVC950453BXAA — 11177113","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman OEM 11177113 Combination Pressure Switch\u003c\/strong\u003e is a genuine dual-stage draft-proving control for the \u003cstrong\u003eAMVC950453BXAA\u003c\/strong\u003e two-stage variable-speed furnace and compatible Goodman\/Amana models. This gray-bodied switch combines two negative-pressure setpoints — \u003cstrong\u003e-0.30 in. WC\u003c\/strong\u003e and \u003cstrong\u003e-0.75 in. WC\u003c\/strong\u003e — into a single assembly, confirming proper venting draft at both low-fire and high-fire stages before the ignition sequence is allowed to proceed. It is a critical safety interlock that prevents operation if the inducer, flue, or condensate path is blocked.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Combination (dual) negative-pressure switch\u003c\/li\u003e\n\u003cli\u003eSetpoints: -0.30 in. WC (low stage) \u0026amp; -0.75 in. WC (high stage)\u003c\/li\u003e\n\u003cli\u003eBody color: Gray\u003c\/li\u003e\n\u003cli\u003eFunction: Two-stage draft\/vent proving safety interlock\u003c\/li\u003e\n\u003cli\u003eFits: Goodman\/Amana AMVC950453BXAA and compatible two-stage furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM 11177113\u003c\/strong\u003e is factory-calibrated to both trip points required by this furnace's staged firing logic. Generic dual switches often have loose tolerances or a single incorrect setpoint, causing intermittent lockouts that are notoriously hard to diagnose. For a dual-stage furnace, matching the exact OEM setpoints is the only reliable fix.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate.\u003c\/strong\u003e Involves disconnecting power, transferring two or more silicone tubing hoses to the correct ports (do not cross them), and moving the electrical connector. Allow 20–30 minutes and verify each hose seats fully. If unsure, use a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057877008755,"sku":"GOODMAN-8659","price":94.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-30-75-in-wc-pressure-switch-for-amvc950453bxaa-11177113","provider":"National HVAC Parts","version":"1.0","type":"link"}