{"product_id":"oem-lennox-inshot-burner-assembly-14-18l63","title":"OEM Lennox Inshot Burner Assembly (14) — 18L63","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e18L63\u003c\/strong\u003e (619796-14) inshot burner assembly is a complete 14-burner set that delivers and shapes the gas flame into the heat exchanger of your Lennox furnace. Inshot burners mix gas and air, provide a stable ignition point, and distribute even, efficient combustion across each heat exchanger tube. This assembly is factory-matched to Lennox firing rates and manifold pressures.\u003c\/p\u003e\u003cp\u003eSymptoms of worn or fouled burners include delayed or rough ignition, yellow or lifting flames, sooting, flame rollout, or short-cycling on the flame sensor. Rust, cracked burner ports, or debris buildup all degrade combustion and can trigger safety lockouts.\u003c\/p\u003e\u003cp\u003eUsing the OEM Lennox \u003cstrong\u003e18L63\u003c\/strong\u003e is essential because burner geometry, port sizing, and spacing are engineered for your furnace's specific gas valve and heat exchanger. Aftermarket burners can alter the air-fuel mixture, causing incomplete combustion, carbon monoxide risk, and premature component failure. This factory assembly guarantees correct flame characteristics, rated efficiency, and safe operation for your Lennox system.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081128591731,"sku":"LNX-18L63","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-18L63.jpg?v=1783762181","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-inshot-burner-assembly-14-18l63","provider":"National HVAC Parts","version":"1.0","type":"link"}