{"product_id":"oem-goodman-blower-door-interlock-switch-w-wires-b1370820","title":"OEM Goodman Blower Door Interlock Switch w\/ Wires — B1370820","description":"\u003ch2\u003eGoodman B1370820 Blower Door Interlock Switch (Pre-Wired)\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eB1370820\u003c\/strong\u003e is a genuine OEM Goodman blower-door interlock switch supplied \u003cstrong\u003ewith factory wire leads attached\u003c\/strong\u003e, built for the \u003cstrong\u003eGMT140-5BB\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This safety switch cuts power to the furnace whenever the blower access panel is removed, ensuring the unit cannot run with the door open — a code-required protection against electrical and combustion hazards during service.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFunction: Blower-compartment door interlock (power cutout)\u003c\/li\u003e\n\u003cli\u003eConfiguration: Normally open, closes when door is installed\u003c\/li\u003e\n\u003cli\u003eWiring: Pre-terminated OEM leads included\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT140-5BB and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370820\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe genuine Goodman assembly arrives with the correct plunger length, bracket, and pre-wired harness, so it seats against the door exactly as the factory intended. Generic door switches frequently require splicing and plunger adjustment, and an incorrectly seated switch can leave the furnace dead or bypass the safety entirely. OEM saves time and guarantees proper interlock action.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty: Easy to Moderate\u003c\/h3\u003e\u003cp\u003eMounting is straightforward, but you'll route and connect the wire leads to the furnace harness. Budget 20–30 minutes. Shut off power at the breaker first, note the original wire routing, and verify the plunger depresses fully when the door is reinstalled.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057148510579,"sku":"GOODMAN-B1370820","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-interlock-switch-w-wires-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}