{"product_id":"oem-goodman-furnace-door-interlock-switch-for-gsms080-4-b1370819","title":"OEM Goodman Furnace Door Interlock Switch for GSMS080-4 — B1370819","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370819 Blower Door Interlock Switch\u003c\/strong\u003e is a factory OEM safety component designed for the \u003cstrong\u003eGSMS080-4\u003c\/strong\u003e gas furnace. This switch interrupts power to the furnace whenever the blower access panel is removed, protecting the technician and preventing operation with the cabinet open. If your furnace won't power on, a failed or misaligned door switch is one of the most common and least expensive culprits.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e B1370819\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Blower door interlock \/ safety cutoff switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e Goodman GSMS080-4 furnace\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Normally-open plunger switch, opens when door is removed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Genuine Goodman OEM\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eThis genuine \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e switch is guaranteed to match the exact plunger travel, mounting footprint, and electrical rating of the original part — no shimming or bracket modification. Aftermarket generic switches are cheaper but can have inconsistent trip points, leading to nuisance no-heat calls. For a low-cost safety component, OEM is the smart choice.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5)\u003c\/strong\u003e — Cut power, remove two mounting screws, transfer the spade connectors, and reinstall. Typically a 10-minute repair with a nut driver. Always disconnect power at the breaker before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058181849459,"sku":"GOODMAN-12975","price":22.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-furnace-door-interlock-switch-for-gsms080-4-b1370819","provider":"National HVAC Parts","version":"1.0","type":"link"}