OEM Lennox 6-Burner Inshot Burner Assembly — 18L55
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The genuine OEM Lennox 18L55 inshot burner assembly (factory number 619795-06) is a complete 6-burner rack that feeds gas into the heat exchanger and produces the flame for combustion in compatible Lennox gas furnaces. The inshot design directs each flame precisely into its heat-exchanger tube so the ignitor lights and the flame sensor proves the burn on every heating cycle. Installing the correct factory assembly maintains proper flame shape, safe combustion, and consistent furnace performance.
Common failure symptoms: Burners that rust, warp, or clog can cause delayed or noisy ignition, flame rollout, popping or rumbling sounds, yellow flames, short cycling, or repeated lockouts from failed flame sensing. Soot buildup and incomplete combustion are also signs the burner rack needs replacing.
Why OEM matters: Lennox builds the 18L55 to precise port sizing, spacing, and orifice alignment for its designated furnace platforms. Generic burners can alter flame behavior and undermine safe, efficient heating. The factory-specified part ensures exact fit, rated BTU input, and long-term ignition reliability for your Lennox system.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days