{"product_id":"oem-lennox-ignitor-flame-sensor-assembly-84k65","title":"OEM Lennox Ignitor \u0026 Flame Sensor Assembly — 84K65","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e84K65\u003c\/strong\u003e ignitor and flame sensor assembly handles two essential jobs in your Lennox furnace: the hot surface igniter glows to light the burners on a call for heat, while the integrated flame sensor confirms a stable flame is present so the control board keeps the gas valve open. Together they ensure reliable, safe ignition every cycle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A worn \u003cstrong\u003e84K65\u003c\/strong\u003e assembly typically causes no-heat calls, burners that fail to light, or a furnace that ignites and then shuts down after a few seconds (flame-sensing failure). Cracked or crumbling igniter elements, a carbon-fouled flame rod, or repeated ignition lockouts on the control board all point to this assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Hot surface igniters are brittle and highly sensitive to voltage, resistance, and precise positioning within the burner flame. The factory \u003cstrong\u003e84K65\u003c\/strong\u003e is built to Lennox specifications for correct glow temperature, flame-rod placement, and warm-up timing — ensuring dependable ignition and accurate flame verification. Generic igniters often fail early or mis-sense flame, causing frustrating intermittent no-heat calls and potential warranty issues.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081093595507,"sku":"LNX-84K65","price":29.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-LNX-84K65.jpg?v=1783762145","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-ignitor-flame-sensor-assembly-84k65","provider":"National HVAC Parts","version":"1.0","type":"link"}