OEM Lennox 5-Burner Inshot Burner Assembly — 18L54
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The genuine OEM Lennox 18L54 inshot burner assembly (factory number 619795-05) is a complete 5-burner rack that feeds gas into the heat exchanger and creates the flame for combustion in compatible Lennox gas furnaces. The inshot burners aim each flame precisely into its heat-exchanger tube so the ignitor lights and the flame sensor confirms the burn on every heating cycle. Fitting the correct factory assembly keeps flame shape, combustion safety, and furnace performance within spec.
Common failure symptoms: Rusted, warped, or clogged burners often cause delayed or noisy ignition, flame rollout, popping or rumbling sounds, yellow flames, short cycling, or repeated lockouts from failed flame sensing. Soot and incomplete combustion are additional warning signs the burner rack is due for replacement.
Why OEM matters: Lennox engineers the 18L54 to precise port sizing, spacing, and orifice alignment for its designated 5-burner furnace platforms. Substitute burners can shift flame behavior and compromise safe, efficient heat. Choosing the factory-specified part ensures exact fit, rated BTU input, and dependable long-term ignition for your Lennox equipment.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
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Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
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