{"product_id":"oem-lennox-ignitor-flame-sensor-assembly-13h27","title":"OEM Lennox Ignitor \u0026 Flame Sensor Assembly — 13H27","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e13H27\u003c\/strong\u003e ignitor and flame sensor assembly ignites the gas at the burners and confirms that a flame is present so your Lennox furnace can run safely. The hot surface ignitor glows to light the burner on each heating cycle, while the integrated flame sensor verifies combustion and signals the control board to keep the gas valve open.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A worn \u003cstrong\u003e13H27\u003c\/strong\u003e typically causes no ignition and no heat, a furnace that clicks and tries to start but never lights, or short cycling where the burner ignites then shuts off within seconds because the flame isn't being sensed. Cracked or eroded ignitors and oxidized flame sensors are among the most common heating-season failures.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Ignitor resistance, element geometry, and sensor placement are matched to your Lennox burner and ignition sequence. The factory \u003cstrong\u003e13H27\u003c\/strong\u003e assembly drops in with correct wiring and mounting, ensuring reliable first-try ignition and dependable flame proving. Aftermarket ignitors often have mismatched resistance and shorter service life.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081115320691,"sku":"LNX-13H27","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-13H27.jpg?v=1783762139","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-ignitor-flame-sensor-assembly-13h27","provider":"National HVAC Parts","version":"1.0","type":"link"}