{"product_id":"oem-goodman-door-switch-with-wires-for-gmnt070-4b-b1370820","title":"OEM Goodman Door Switch with Wires for GMNT070-4B — B1370820","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370820 Blower Door Switch\u003c\/strong\u003e is a genuine OEM safety interlock designed for the \u003cstrong\u003eGMNT070-4B\u003c\/strong\u003e gas furnace and related Goodman\/Amana models. This switch de-energizes the furnace whenever the blower compartment door is removed, preventing operation with the panel open and protecting service technicians from live components and combustion hazards. If your furnace is completely dead — no ignition, no blower, no LED activity — a stuck-open or failed door switch is a frequent culprit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Single-pole plunger switch, factory pre-wired with lead harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Normally-open interlock, closes when door is seated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeads:\u003c\/strong\u003e Pre-attached wires with connectors for plug-and-play install\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Blower-compartment bracket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GMNT070-4B and select Goodman\/Amana furnaces\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM vs. Generic:\u003c\/strong\u003e The genuine B1370820 arrives with the correct wire length, connectors, and plunger travel so the switch actuates exactly when the factory door is installed. Generic door switches often require splicing and may not align with the plunger tab, leading to intermittent power loss. The OEM assembly eliminates guesswork and wiring errors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eInstallation difficulty:\u003c\/strong\u003e Easy-Moderate (⭐⭐☆☆☆). Mount the bracket, plug in the pre-wired leads, and verify the plunger depresses fully when the door is closed. Roughly 20 minutes. Disconnect power before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058129125747,"sku":"GOODMAN-11666","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-door-switch-with-wires-for-gmnt070-4b-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}