{"product_id":"oem-goodman-blower-door-safety-switch-w-wires-for-gmth045-3b-b1370820","title":"OEM Goodman Blower Door Safety Switch w\/ Wires for GMTH045-3B — B1370820","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370820 Blower Door Safety Switch\u003c\/strong\u003e is a genuine OEM interlock supplied with factory pre-attached wire leads, designed for the \u003cstrong\u003eGMTH045-3B\u003c\/strong\u003e gas furnace and related Goodman\/Amana models. This normally-open switch closes only when the blower access panel is fully installed, cutting all power to the furnace whenever the door is removed. It is a required safety device — if your furnace is completely dead with no control-board LED, a stuck or broken door switch is a frequent culprit.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370820\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Blower compartment door interlock switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Normally open, closes when panel is seated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Includes OEM pre-wired leads with terminals\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GMTH045-3B and related furnaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman (OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis assembly ships with the correct lead length, connectors, and plunger geometry so it seats against your furnace's door tab exactly as designed. Generic switches often require splicing and may not trip reliably with the panel closed, defeating the interlock. The pre-wired OEM part removes guesswork and keeps the safety function intact.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2\/5).\u003c\/strong\u003e Mounts with one or two screws; plug the leads onto the existing harness or splice per the wiring diagram. Disconnect power first, then verify the furnace only energizes with the door fully installed.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058165662067,"sku":"GOODMAN-12531","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-safety-switch-w-wires-for-gmth045-3b-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}