OEM Lennox Burner Assembly (602866-12, 135) — 69W91
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The genuine OEM Lennox 69W91 burner assembly (factory reference 602866-12) delivers the fuel-air mixture to the flame and directs it into the heat exchanger on compatible Lennox gas furnaces. A correctly functioning burner is the foundation of clean, efficient combustion and reliable heat output throughout the season.
Common failure symptoms: Aging or damaged burners often cause hard starts, delayed ignition with a small "whoomp" on light-off, uneven or lifting flames, yellow-tipped flames, rumbling noise, or rust and scale buildup on the burner ports. These conditions reduce efficiency and can trip the furnace on a safety limit.
Why OEM matters: The 69W91 is built to precise port sizing and orifice alignment so the flame profile matches what your Lennox furnace was engineered for. Generic burners can misalign with the ignitor and flame sensor, causing lockouts, sooting, and poor heat transfer. Choosing the factory Lennox part ensures proper flame geometry, safe operation, and full equipment compatibility.
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