{"product_id":"oem-goodman-door-interlock-switch-for-gup040-2-b1370819","title":"OEM Goodman Door Interlock Switch for GUP040-2 — B1370819","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370819 Door Switch\u003c\/strong\u003e is a genuine OEM blower-compartment safety interlock for the \u003cstrong\u003eGoodman GUP040-2\u003c\/strong\u003e gas furnace. This plunger-style switch cuts power to the furnace whenever the blower access panel is removed, protecting technicians and homeowners from live electrical and spinning-blower hazards. A stuck, broken, or missing door switch is a frequent cause of a furnace that appears completely dead when the panel is off.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370819\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Normally-open plunger interlock switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Disables furnace when blower door is removed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman\/Amana GUP040-2 furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bracket-mount, spade terminal connections\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM B1370819\u003c\/strong\u003e matches the factory plunger travel and bracket geometry, so the panel actuates it fully when closed. \u003cstrong\u003eGeneric\u003c\/strong\u003e interlocks often have a different plunger length or footprint, forcing you to bend brackets — which can leave the furnace running with the door off (a safety defeat) or refusing to start when closed. Choose OEM for correct, safe actuation.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eSimple swap: kill power at the disconnect, unplug the spade terminals, remove the mounting screw(s), and install the new switch so the panel depresses the plunger fully. About 10–15 minutes with a nut driver. Verify the furnace powers down when the panel is pulled.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058190860659,"sku":"GOODMAN-13187","price":22.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-door-interlock-switch-for-gup040-2-b1370819","provider":"National HVAC Parts","version":"1.0","type":"link"}