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The genuine OEM Lennox 18L60 (factory number 619796-08) is a complete 8-port inshot burner assembly for Lennox gas furnaces. Each burner meters the air-gas mixture into a heat exchanger tube, establishing the stable, evenly distributed flame your furnace needs to reach its rated heating output. As a factory part, the 18L60 preserves the exact burner spacing, orifice alignment, and flame-carryover design of your Lennox system.
Common failure symptoms: hard or delayed ignition, flame rollout, yellow or sooting flames, burner rumble, and nuisance flame-sensor lockouts. Corrosion, debris buildup, and a heat-warped burner rack are the usual causes for replacing an aging assembly.
Why OEM matters: Safe combustion in a Lennox furnace depends on precise burner-to-tube alignment and correct temperature rise. Non-OEM burners can misfire, produce improper flame patterns, and accelerate heat exchanger wear. The OEM 18L60 assembly guarantees proper fit, rated efficiency, and safe, reliable ignition for your Lennox equipment.