{"product_id":"oem-lennox-spark-electrode-igniter-20j90","title":"OEM Lennox Spark Electrode Igniter — 20J90","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e20J90\u003c\/strong\u003e spark electrode igniter delivers the high-voltage spark that lights the burners in your gas furnace. Positioned at the burner assembly, it fires during each ignition sequence to establish a reliable flame that the flame sensor then confirms. This electrode is engineered for direct fit in Lennox furnaces that specify part number 20J90.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A worn or cracked \u003cstrong\u003e20J90\u003c\/strong\u003e igniter often causes delayed ignition, repeated clicking with no light-off, or a complete failure to start the burners. You may notice the furnace attempting several ignition cycles before locking out, a small gas smell from unburned fuel, or no heat despite the blower running. Cracked ceramic insulation and eroded electrode tips are typical wear indicators.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The gap distance, electrode geometry, and insulator material of the \u003cstrong\u003e20J90\u003c\/strong\u003e are matched to the spark output of your Lennox control system. Generic igniters may misfire, produce a weak spark, or fail to seat correctly, resulting in unreliable ignition and repeat service calls. The OEM electrode guarantees consistent, on-demand light-off and long service life.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081088582003,"sku":"LNX-20J90","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-20J90.jpg?v=1783763635","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-spark-electrode-igniter-20j90","provider":"National HVAC Parts","version":"1.0","type":"link"}