What are the specs for this Burner Assembly?

The correct replacement for Lennox model OEM Lennox Burner Box Assembly (LB-90883) — 41L97 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 Burner Box Assembly (LB-90883) — 41L97.

What symptoms indicate I need a new burner assembly?

Common symptoms that indicate you need a new burner assembly 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 Burner Box Assembly (LB-90883) — 41L97

Name: OEM Lennox Burner Box Assembly (LB-90883) — 41L97
Brand: Lennox
SKU: LNX-41L97
Price: 49.95 USD
Availability: InStock

SKU: LNX-41L97 Brand: Lennox

$49.95 $69.95

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The Lennox 41L97 (factory reference LB-90883) is a genuine OEM burner box assembly for Lennox gas furnaces. The burner box houses the burners that mix gas and air for combustion at the heat exchanger inlet, making it a core component of your furnace's heating cycle. It is engineered to the exact dimensions and gas-flow characteristics your Lennox unit was certified with.

Common failure symptoms: When the burner box or its burners degrade you may notice delayed or rough ignition, a yellow or lifting flame instead of a crisp blue one, rumbling or popping on startup, sooting, or a furnace that repeatedly locks out on flame-sense or safety faults.

Why OEM matters: Combustion components are safety-critical. Aftermarket burner boxes can alter flame geometry, air-fuel mixing, and clearances — risking incomplete combustion, carbon monoxide, or nuisance shutdowns. The OEM Lennox 41L97 guarantees correct fit and the combustion performance your equipment was designed and listed for, protecting both efficiency and safety.

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 Burner Box Assembly (...

$49.95

Frequently Asked Questions

Does this Burner Assembly fit my Lennox OEM Lennox Burner Box Assembly (LB-90883) — 41L97?

Yes. This is the factory-specified OEM burner assembly for the Lennox OEM Lennox Burner Box Assembly (LB-90883) — 41L97. 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 assembly on my Lennox OEM Lennox Burner Box Assembly (LB-90883) — 41L97?

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 assembly?

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

Is this burner assembly 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 assembly?

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 Burner Box Assembly (LB-90883) — 41L97

Shipping Information

Return Policy

Frequently Asked Questions