{"product_id":"oem-lennox-inshot-burner-assembly-12-pack-18l62","title":"OEM Lennox Inshot Burner Assembly 12-Pack — 18L62","description":"\u003cp\u003eThe Lennox \u003cstrong\u003e18L62\u003c\/strong\u003e (factory number 619796-12) is a genuine OEM inshot burner assembly supplied as a complete 12-burner set for compatible Lennox gas furnaces. Inshot burners inject the air-fuel mixture straight into the heat exchanger tubes, where controlled combustion transfers heat to the airstream — making them a core component of clean, efficient furnace operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e Corroded, cracked, or scale-clogged inshot burners can cause delayed ignition, flame rollout, uneven or yellow flames, sooting, whistling or roaring noises, and repeated ignition lockouts. Because burners fire in sequence, a single damaged unit can disrupt flame carryover across the entire bank and reduce overall heat output.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Inshot burner performance depends on exact port sizing, spacing, and alignment with the gas orifices and heat-exchanger cells. The factory Lennox \u003cstrong\u003e18L62\u003c\/strong\u003e set matches these specifications precisely, ensuring reliable cross-lighting, correct flame profile, and rated combustion efficiency. Replacing the full 12-burner set with OEM components restores uniform performance and protects the heat exchanger from hot spots caused by mismatched aftermarket burners.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081128362355,"sku":"LNX-18L62","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-burner-inshot-LNX-18L62.jpg?v=1783762192","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-inshot-burner-assembly-12-pack-18l62","provider":"National HVAC Parts","version":"1.0","type":"link"}