What are the specs for this Burner?

The correct replacement for Lennox model OEM Lennox Inshot Burner Assembly (16) — 18L64 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Lennox equipment which lists the model number OEM Lennox Inshot Burner Assembly (16) — 18L64.

What symptoms indicate I need a new burner?

Common symptoms that indicate you need a new burner include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Lennox

OEM Lennox Inshot Burner Assembly (16) — 18L64

Name: OEM Lennox Inshot Burner Assembly (16) — 18L64
Brand: Lennox
SKU: LNX-18L64
Price: 49.95 USD
Availability: InStock

SKU: LNX-18L64 Brand: Lennox

$49.95 $69.95

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The genuine OEM Lennox 18L64 inshot burner assembly (factory reference 619796-16) is a complete 16-burner set for Lennox gas furnaces. Inshot burners fire directly into the heat exchanger tubes, drawing in combustion air and projecting a precise flame for high-efficiency heat transfer. This assembly is the combustion heart of your furnace, engineered for a clean and consistent burn.

Common failure symptoms: Corroded, cracked, or rust-clogged inshot burners can cause noisy or delayed ignition, flame rollout, yellow or lazy flames, sooting, and flame-sensor lockouts that leave you without heat. Flaking rust or blocked burner ports are strong signs the assembly needs to be replaced.

Why OEM matters: The Lennox 18L64 is manufactured with exact port sizing, throat geometry, and mounting alignment so each burner fires straight into its heat exchanger tube at the correct gas-to-air ratio. Aftermarket inshot burners can misfire, overheat the exchanger, or produce elevated carbon monoxide. Installing the OEM assembly restores factory-rated ignition, efficiency, and safety for your Lennox equipment.

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

OEM Lennox Inshot Burner Assembl...

$49.95

Frequently Asked Questions

Does this Burner fit my Lennox OEM Lennox Inshot Burner Assembly (16) — 18L64?

Yes. This is the factory-specified OEM burner for the Lennox OEM Lennox Inshot Burner Assembly (16) — 18L64. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the burner on my Lennox OEM Lennox Inshot Burner Assembly (16) — 18L64?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new burner?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this burner compatible with Bryant or Payne too?

Many Lennox parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Lennox burner?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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OEM Lennox Inshot Burner Assembly (16) — 18L64

Shipping Information

Return Policy

Frequently Asked Questions