{"product_id":"oem-lennox-inshot-burner-assembly-7-burner-18l56","title":"OEM Lennox Inshot Burner Assembly (7 Burner) — 18L56","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e18L56\u003c\/strong\u003e (factory number 619795-07) is a complete 7-port inshot burner assembly used in Lennox gas furnaces. These burners direct a metered air-gas mixture into the heat exchanger tubes, where they establish a stable, efficient flame for heating. Because it is a factory component, the \u003cstrong\u003e18L56\u003c\/strong\u003e is engineered to the exact burner spacing, orifice alignment, and flame-carryover geometry your Lennox furnace was designed around.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e delayed or rough ignition, flame rollout, sooting or yellow-tipped flames, unusual burner noise, and short-cycling on the flame sensor. Rust, scale buildup, or a warped burner rack from years of thermal stress are typical reasons for replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e Lennox heat exchangers rely on precise burner-to-tube alignment for safe combustion and correct temperature rise. Aftermarket or mismatched burners can cause improper flame patterns, incomplete combustion, and premature heat exchanger damage. Installing the OEM \u003cstrong\u003e18L56\u003c\/strong\u003e assembly ensures proper fit, rated efficiency, and safe operation for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081128165747,"sku":"LNX-18L56","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-18L56.jpg?v=1783762189","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-inshot-burner-assembly-7-burner-18l56","provider":"National HVAC Parts","version":"1.0","type":"link"}