{"product_id":"oem-goodman-blower-door-switch-w-wires-for-gmth090-5a-b1370820","title":"OEM Goodman Blower Door Switch w\/ Wires for GMTH090-5A — B1370820","description":"\u003ch2\u003eGoodman B1370820 Blower Door Switch with Wires\u003c\/h2\u003e\u003cp\u003eThe Goodman \u003cstrong\u003eB1370820 door switch\u003c\/strong\u003e is a genuine OEM blower-compartment interlock, supplied complete with its \u003cstrong\u003efactory wire harness\u003c\/strong\u003e, for the \u003cstrong\u003eGMTH090-5A\u003c\/strong\u003e gas furnace. This safety switch de-energizes the furnace when the blower access panel is removed, preventing the unit from running with the door off. A furnace that won't start, has no blower operation, or only runs when the panel is pressed by hand almost always points to a failed or misaligned door switch.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePart number: B1370820 (OEM Goodman)\u003c\/li\u003e\n\u003cli\u003eType: Blower door interlock \/ safety switch\u003c\/li\u003e\n\u003cli\u003eIncludes: Pre-wired lead harness\u003c\/li\u003e\n\u003cli\u003eFunction: Opens circuit when access panel is removed\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMTH090-5A gas furnace\u003c\/li\u003e\n\u003cli\u003eEquipment: Gas furnace\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause the \u003cstrong\u003eOEM B1370820\u003c\/strong\u003e ships with the correct connector and pre-terminated leads, it plugs directly into the Goodman harness — no splicing or crimping guesswork. Generic door switches often require cutting the old harness and matching plunger height, which can leave the interlock unreliable. For a safety interlock, OEM is the recommended choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty: Easy\u003c\/h3\u003e\u003cp\u003eRated \u003cstrong\u003eEasy\u003c\/strong\u003e — one mounting screw and a plug-in connector. Power down at the disconnect first. Verify the plunger aligns with the panel tab so the switch fully closes when the door is reinstalled.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63057148641651,"sku":"GOODMAN-B1370820","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-switch-w-wires-for-gmth090-5a-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}