{"product_id":"oem-goodman-blower-door-safety-switch-for-gmn100-4-b1370820","title":"OEM Goodman Blower Door Safety Switch for GMN100-4 — B1370820","description":"\u003cp\u003eKeep your Goodman \u003cstrong\u003eGMN100-4\u003c\/strong\u003e furnace protected with the genuine OEM \u003cstrong\u003eB1370820 blower door safety switch\u003c\/strong\u003e, supplied \u003cstrong\u003ewith wires\u003c\/strong\u003e for a plug-and-go repair. This interlock switch cuts power to the furnace whenever the blower access panel is removed, preventing operation with the door open. A worn or broken door switch is a common cause of a furnace that appears completely dead — no blower, no ignition, no board lights.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e B1370820\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Blower-door safety interlock switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring:\u003c\/strong\u003e Pre-wired with leads (with wires)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Action:\u003c\/strong\u003e Opens when access panel is removed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Goodman\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits Model:\u003c\/strong\u003e GMN100-4 (gas furnace)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe \u003cstrong\u003eOEM Goodman B1370820\u003c\/strong\u003e arrives with the correct pre-attached wire leads and mounting tab, so it drops straight into the factory location with matching connectors. Our \u003cstrong\u003egeneric equivalent\u003c\/strong\u003e covers the same interlock function at a lower price, though wire length and connector style may need minor adjustment.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (2 of 5).\u003c\/strong\u003e Roughly 15–20 minutes: shut off power, unplug or splice the two leads, remove the mounting screw, and install the new switch so its plunger contacts the panel. Never tape or defeat the door switch — it is a safety device that prevents the furnace from running with the blower compartment open.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058126668147,"sku":"GOODMAN-11589","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-safety-switch-for-gmn100-4-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}