{"product_id":"oem-goodman-door-switch-with-wires-for-gmt115-5b-b1370820","title":"OEM Goodman Door Switch with Wires for GMT115-5B — B1370820","description":"\u003ch2\u003eGoodman B1370820 Door Interlock Switch with Wires\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eGoodman B1370820\u003c\/strong\u003e is a factory-OEM blower-door safety switch pre-wired with lead harness, designed as a direct replacement for the \u003cstrong\u003eGMT115-5B\u003c\/strong\u003e gas furnace. This interlock switch cuts power to the blower and burner circuits whenever the access panel is removed, preventing the furnace from operating with the door off. A failing or stuck door switch is a common cause of a furnace that won't start, cycles unexpectedly, or shows a blower-off condition.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Normally-open door interlock \/ plunger safety switch\u003c\/li\u003e\n\u003cli\u003eIncludes: Pre-terminated wire leads (plug-and-play)\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMT115-5B and compatible 115K BTU furnaces\u003c\/li\u003e\n\u003cli\u003eOEM Part Number: B1370820\u003c\/li\u003e\n\u003cli\u003eBrand: Goodman (genuine OEM)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eOur genuine Goodman OEM switch guarantees exact contact ratings, plunger travel, and connector fit — no splicing or crimping guesswork. Universal generic switches often require rewiring and may not seat flush against the panel, risking nuisance trips. For a safety-critical interlock, OEM is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstall Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy (1\/5).\u003c\/strong\u003e Disconnect power, unplug the old switch, mount the new one, and reconnect the leads. Typically a 10-minute repair with basic hand tools. Always confirm 24V\/line power is off before servicing.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058161762675,"sku":"GOODMAN-12445","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-door-switch-with-wires-for-gmt115-5b-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}