{"product_id":"oem-goodman-blower-door-safety-switch-w-wires-for-gmpn100-4-b1370820","title":"OEM Goodman Blower Door Safety Switch w\/ Wires for GMPN100-4 — B1370820","description":"\u003cp\u003eThe \u003cstrong\u003eGoodman B1370820 Blower Door Interlock Switch\u003c\/strong\u003e is a genuine OEM safety switch, pre-wired with a factory harness, for the \u003cstrong\u003eGMPN100-4\u003c\/strong\u003e gas furnace and compatible Goodman\/Amana models. This interlock cuts power to the furnace whenever the blower access panel is removed, preventing operation with the door open. If your furnace won't start until you jump or hold the door switch, this exact-fit assembly restores safe, code-compliant operation.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOEM Part Number: B1370820\u003c\/li\u003e\n\u003cli\u003eType: Blower-compartment door interlock safety switch\u003c\/li\u003e\n\u003cli\u003eConfiguration: SPST plunger switch with pre-attached wire leads\u003c\/li\u003e\n\u003cli\u003eFunction: Opens control circuit when access panel is removed\u003c\/li\u003e\n\u003cli\u003eIncludes: Switch body and factory wire harness\u003c\/li\u003e\n\u003cli\u003eFits: Goodman GMPN100-4 furnace and cross-compatible models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOEM vs. Generic\u003c\/h3\u003e\u003cp\u003eBecause this part ships with the \u003cstrong\u003eOEM Goodman\u003c\/strong\u003e wire harness and correct plunger travel, it drops straight into the factory bracket and mates with existing connectors — no splicing or guesswork. Generic door switches often require re-terminating wires and may not align with the panel's actuating tab, causing intermittent no-start faults. The OEM assembly is the reliable choice.\u003c\/p\u003e\u003ch3\u003eInstallation Difficulty\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eEasy–Moderate (2 of 5)\u003c\/strong\u003e — Disconnect power, note the wiring, unclip the old switch and harness, mount the new switch so the panel depresses the plunger fully, and reconnect. Confirm the furnace shuts off when the door is removed. If wiring is unclear, hire a licensed HVAC technician.\u003c\/p\u003e","brand":"Goodman","offers":[{"title":"Default Title","offer_id":63058150130035,"sku":"GOODMAN-12097","price":40.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/nationalhvacparts.com\/products\/oem-goodman-blower-door-safety-switch-w-wires-for-gmpn100-4-b1370820","provider":"National HVAC Parts","version":"1.0","type":"link"}