{"product_id":"oem-lennox-hot-surface-ignitor-98p77","title":"OEM Lennox Hot Surface Ignitor — 98P77","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e98P77\u003c\/strong\u003e hot surface ignitor (HSI) lights the gas burners in your Lennox furnace on every heating cycle. Energized by the furnace control board when the thermostat calls for heat, the element glows to ignition temperature and lights the fuel as the gas valve opens. Because it fires on every cycle, the HSI is one of the hardest-working and most commonly replaced parts in a gas furnace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e No heat despite the blower running, a furnace that clicks but never lights, ignition lockout after multiple failed attempts, or an ignitor element that stays dark and cold. The silicon carbide or silicon nitride element is fragile and prone to cracking from age, thermal stress, or handling.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The OEM Lennox \u003cstrong\u003e98P77\u003c\/strong\u003e matches the precise electrical resistance, warm-up profile, and bracket geometry required by your Lennox control system. Generic replacements risk incorrect timing, poor fit, and early failure. Choosing the genuine part ensures fast, reliable ignition and full compatibility with your equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081140224371,"sku":"LNX-98P77","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-98P77.jpg?v=1783762036","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-hot-surface-ignitor-98p77","provider":"National HVAC Parts","version":"1.0","type":"link"}