{"product_id":"oem-goodman-blower-door-safety-switch-w-wires-for-gmnt120-5-b1370820","title":"OEM Goodman Blower Door Safety Switch w\/ Wires for GMNT120-5 — B1370820","description":"\u003ch2\u003eGoodman B1370820 Blower Door Safety Switch (with Wires)\u003c\/h2\u003e\u003cp\u003eThe genuine Goodman B1370820 is a blower-door interlock safety switch, pre-assembled with its wire harness, for the GMNT120-5 furnace and compatible Goodman\/Amana models. This switch de-energizes the furnace whenever the blower access panel is removed, preventing operation with the door off — a critical safety and code requirement. Ordering the OEM assembly means the plunger position, harness length, and connector all match the original.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Normally-open plunger interlock switch\u003c\/li\u003e\n\u003cli\u003eIncludes: Factory wire harness \/ leads\u003c\/li\u003e\n\u003cli\u003eFunction: Blower-door safety cutoff (de-energizes on panel removal)\u003c\/li\u003e\n\u003cli\u003eMounting: Panel\/bracket mount with plunger actuator\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMNT120-5 and compatible furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part #: B1370820\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThe OEM B1370820 arrives with the correct wire harness and connector already attached, so there's no splicing or guesswork. Generic door switches often require you to reuse old leads or crimp new ones, introducing failure points. For a safety interlock, the factory pre-wired assembly is the cleaner, more reliable install.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eModerate (2\/5).\u003c\/strong\u003e Disconnect power, remove the blower panel, unplug the harness from the control board, unscrew the old switch, mount the new one so the plunger aligns with the door, and reconnect. Verify actuation before returning the furnace to service.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058131779955,"sku":"GOODMAN-11753","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-safety-switch-w-wires-for-gmnt120-5-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}