{"product_id":"oem-goodman-0-40-no-pressure-switch-gmpv100-3-b1370126","title":"OEM Goodman -0.40\" NO Pressure Switch GMPV100-3 — B1370126","description":"\u003cp\u003eThe Goodman \u003cstrong\u003eB1370126 Pressure Switch\u003c\/strong\u003e is a genuine OEM draft-proving control for the \u003cstrong\u003eGMPV100-3\u003c\/strong\u003e furnace and compatible Goodman\/Amana models. Rated at \u003cstrong\u003e-0.40\" WC (water column)\u003c\/strong\u003e and \u003cstrong\u003enormally open (NO)\u003c\/strong\u003e, this switch verifies that the induced-draft blower is producing adequate negative pressure before the control board allows ignition — a key safety interlock that prevents firing without proper venting.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1370126\u003c\/li\u003e\n\u003cli\u003ePart Type: Air Pressure \/ Draft Switch\u003c\/li\u003e\n\u003cli\u003eSet Point: -0.40\" WC (water column)\u003c\/li\u003e\n\u003cli\u003eContact Configuration: Normally Open (NO)\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas Furnace\u003c\/li\u003e\n\u003cli\u003ePrimary Fit: GMPV100-3\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSymptoms of a Bad Pressure Switch\u003c\/h3\u003e\u003cp\u003eFurnace inducer runs but burners never light, ignition lockout, or a pressure-switch fault code. Note that a blocked flue, disconnected hose, or condensate blockage can also open the switch — inspect venting and tubing before replacing.\u003c\/p\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman B1370126\u003c\/strong\u003e matches the exact -0.40\" WC set point and NO configuration your furnace requires; even small deviations in the set point cause nuisance faults. A \u003cstrong\u003egeneric equivalent\u003c\/strong\u003e can work if it matches the pressure rating and contact type precisely. For this safety interlock, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eCut power, note wire and hose positions, remove one or two screws, and transfer the tubing and terminals to the new switch. Estimated time: 15–20 minutes. A DIY-friendly repair once venting issues are ruled out.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058151407987,"sku":"GOODMAN-12149","price":26.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-0-40-no-pressure-switch-gmpv100-3-b1370126","provider":"National HVAC Parts","version":"1.0","type":"link"}