OEM Lennox Combustion Head Cone End 1.35 GPH — 36K45
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The genuine OEM Lennox 36K45 is a combustion head cone end rated for a 1.35 GPH nozzle firing rate, used in Lennox oil-fired furnace burners. The combustion head shapes and stabilizes the flame at the point of ignition, promoting proper air-fuel mixing and clean, efficient combustion. Correct cone geometry is critical to maintaining a stable, retention-style flame and hitting the burner's rated firing performance.
Common failure symptoms: A cracked, eroded, or carbon-fouled combustion head can cause rough ignition, flame instability, sooting, incomplete combustion, higher fuel consumption, and nuisance lockouts. Because it sits directly in the flame path, this part is exposed to intense heat and gradually wears over its service life.
Why OEM matters: The 36K45 is matched to a specific nozzle size and burner design, and its dimensions directly affect combustion quality and safety. Using the genuine Lennox part ensures the flame pattern and air settings your technician relies on stay within factory specification. Substituting a non-OEM head can throw off combustion tuning and efficiency. Order the authentic Lennox component for a clean-burning, dependable repair.
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
- Email info@nationalhvacparts.com to initiate a return
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