{"product_id":"oem-goodman-0-40-wc-no-pressure-switch-gmpv125-5-b1370126","title":"OEM Goodman -0.40\" WC NO Pressure Switch GMPV125-5 — B1370126","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370126 Pressure Switch\u003c\/strong\u003e is a genuine OEM safety control for the \u003cstrong\u003eGMPV125-5\u003c\/strong\u003e gas furnace. Rated at \u003cstrong\u003e-0.40\" water column\u003c\/strong\u003e with \u003cstrong\u003enormally open\u003c\/strong\u003e contacts, this switch verifies that the inducer draft motor is pulling adequate negative pressure before the control board permits ignition. If venting is blocked or the inducer fails, the switch stays open and locks out the furnace — a critical protection against flue-gas spillage.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart type: Air-proving \/ draft pressure switch\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: B1370126\u003c\/li\u003e\n\u003cli\u003eTrip point: -0.40\" WC (negative pressure)\u003c\/li\u003e\n\u003cli\u003eContact configuration: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eCompatible model: Goodman GMPV125-5 furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM B1370126 is calibrated to Goodman's exact -0.40\" setpoint and uses the correct hose-port and terminal layout. Generic switches with a mismatched setpoint can cause nuisance lockouts or, worse, allow operation under unsafe draft conditions. On a combustion safety device, the OEM part is the right choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2 of 5).\u003c\/strong\u003e Disconnect power, remove the pressure hose and two spade terminals, unscrew the switch, and reverse to install. A multimeter helps confirm operation. Always verify draft after replacement.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058152358259,"sku":"GOODMAN-12181","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-0-40-wc-no-pressure-switch-gmpv125-5-b1370126","provider":"National HVAC Parts","version":"1.0","type":"link"}