{"product_id":"oem-goodman-furnace-blower-door-switch-for-gdt045-3b-b1370819","title":"OEM Goodman Furnace Blower Door Switch for GDT045-3B — B1370819","description":"\u003ch2\u003eGoodman B1370819 Blower Door Safety Switch\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370819\u003c\/strong\u003e is the factory-original blower-compartment door interlock switch for the \u003cstrong\u003eGDT045-3B\u003c\/strong\u003e gas furnace. This plunger-style safety cuts 120V power to the furnace whenever the blower access panel is removed, preventing the unit from operating with the door off. If your furnace is completely dead — no ignition, no blower, no board lights — a stuck or broken door switch (or a panel that isn't seating the plunger) is one of the first things to check.\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 Blower-door interlock \/ safety switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActuation:\u003c\/strong\u003e Plunger (opens when door removed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact configuration:\u003c\/strong\u003e Normally open (closed with door installed)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GDT045-3B furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment:\u003c\/strong\u003e Gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch ensures the exact plunger length and bracket geometry so the door reliably makes contact. The \u003cstrong\u003egeneric\u003c\/strong\u003e equivalent offers the same interlock function at a lower price. Both are backed by a GDT045-3B fit guarantee.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eA simple 10–15 minute repair. Shut off power at the breaker, transfer the two wires one at a time to avoid mixing them up, unclip or unscrew the old switch, and snap in the replacement. Reinstall the panel and confirm the plunger depresses fully when the door is seated.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058079056243,"sku":"GOODMAN-10407","price":22.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-furnace-blower-door-switch-for-gdt045-3b-b1370819","provider":"National HVAC Parts","version":"1.0","type":"link"}