{"product_id":"oem-goodman-30-75-in-wc-combination-pressure-switch-for-wgfm295070v4cab-11177113","title":"OEM Goodman -.30\/-.75 in. WC Combination Pressure Switch for WGFM295070V4CAB — 11177113","description":"\u003ch2\u003eGoodman 11177113 Combination Pressure Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman 11177113 is a genuine OEM dual-stage combination pressure switch engineered for the \u003cstrong\u003eWGFM295070V4CAB\u003c\/strong\u003e two-stage gas furnace and compatible Goodman\/Amana models. This switch monitors both the low-fire (-.30 in. WC) and high-fire (-.75 in. WC) draft conditions, verifying that the induced-draft blower is producing adequate venting before and during each firing stage. If flue draft is blocked or weak, the switch opens the ignition circuit to prevent unsafe combustion and lock out the furnace.\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 in. WC and -.75 in. WC\u003c\/li\u003e\n\u003cli\u003eColor code: Gray body\u003c\/li\u003e\n\u003cli\u003eApplication: Two-stage induced-draft gas furnaces\u003c\/li\u003e\n\u003cli\u003eFit: WGFM295070V4CAB and cross-compatible Goodman\/Amana units\u003c\/li\u003e\n\u003cli\u003eConnections: Standard 1\/4 in. spade terminals with hose ports\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis is the \u003cstrong\u003efactory OEM part\u003c\/strong\u003e — calibrated to Goodman's exact trip pressures and terminal layout, so it drops in without adapters or recalibration. Aftermarket universal switches may use approximate set points that cause nuisance lockouts or fail to trip on genuine draft faults. For a safety-critical component, OEM is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate\u003c\/strong\u003e — Roughly 20–30 minutes. Requires disconnecting furnace power, labeling and transferring wire terminals, and reseating the pressure hoses on the correct ports. Best performed by an HVAC technician; verify tubing routing and confirm proper trip on both stages after install.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eAlways shut off electrical power and gas before servicing. Professional installation recommended.\u003c\/em\u003e\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058245091699,"sku":"GOODMAN-14530","price":79.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-30-75-in-wc-combination-pressure-switch-for-wgfm295070v4cab-11177113","provider":"National HVAC Parts","version":"1.0","type":"link"}