{"product_id":"oem-goodman-blower-door-safety-switch-w-wires-for-dms81405dna-b1370820","title":"OEM Goodman Blower Door Safety Switch w\/ Wires for DMS81405DNA — B1370820","description":"\u003ch2\u003eGoodman B1370820 Blower Door Safety Switch (with Wires)\u003c\/h2\u003e\u003cp\u003eThe Goodman B1370820 is the factory-original blower-compartment door interlock switch, supplied with its integrated wire harness, for the \u003cstrong\u003eDMS81405DNA\u003c\/strong\u003e furnace. This safety switch de-energizes the furnace whenever the blower access panel is removed, preventing operation with the door open and protecting service technicians and homeowners from moving parts and electrical hazards. A furnace that won't start after service is frequently caused by a stuck, misaligned, or failed door switch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: B1370820\u003c\/li\u003e\n\u003cli\u003eType: Plunger-style door interlock (SPST)\u003c\/li\u003e\n\u003cli\u003eSupplied with pre-terminated wire leads\u003c\/li\u003e\n\u003cli\u003eFits: Goodman DMS81405DNA furnace\u003c\/li\u003e\n\u003cli\u003eFunction: Normally-open safety cutoff, closes when panel is seated\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis \u003cstrong\u003egenuine Goodman OEM\u003c\/strong\u003e assembly arrives with the correct wire gauge, connectors, and lead length pre-installed, so it drops in without splicing or crimping guesswork. Generic replacements often require you to cut and re-terminate leads, and inconsistent plunger travel can leave the furnace intermittently dead. OEM ensures a reliable, code-compliant interlock.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy–Moderate (2\/5).\u003c\/strong\u003e Cut power at the disconnect, note the wiring, unplug or unscrew the old switch bracket, transfer the harness connections, and mount the new switch so the plunger is fully depressed when the blower door is closed. Confirm the furnace only energizes with the panel installed. Budget 20–30 minutes.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058051006835,"sku":"GOODMAN-9636","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-safety-switch-w-wires-for-dms81405dna-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}