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Lennox

OEM Lennox Primary Heat Exchanger Assembly — 92L76

SKU: LNX-92L76 Brand: Lennox
$399.95 $549.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox 92L76 primary heat exchanger assembly is the heart of your Lennox furnace's heating cycle, transferring heat generated by the burners into the air stream that warms your home. It keeps combustion gases safely isolated from your indoor air while maximizing efficient heat transfer. Manufactured to precise Lennox factory tolerances, this assembly is designed for a guaranteed fit and reliable operation in compatible Lennox furnace models.

Common failure symptoms: Watch for visible cracks or rust, a distorted or rolling burner flame, soot accumulation, strange smells during operation, or repeated tripping of the high-limit switch. Because a compromised heat exchanger can leak carbon monoxide into your home, any sign of failure warrants immediate replacement for your family's safety.

Why OEM matters: A heat exchanger endures constant high-temperature thermal stress, so material quality and exact dimensions are critical. The OEM Lennox 92L76 uses factory-specified metallurgy and forming to guarantee correct fit, safe combustion sealing, and rated efficiency. Choosing OEM protects your equipment warranty and avoids the fit and durability problems common with generic parts.

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

Frequently Asked Questions

Does this Heat Exchanger fit my Lennox OEM Lennox Primary Heat Exchanger Assembly — 92L76?
Yes. This is the factory-specified OEM heat exchanger for the Lennox OEM Lennox Primary Heat Exchanger Assembly — 92L76. 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 heat exchanger on my Lennox OEM Lennox Primary Heat Exchanger Assembly — 92L76?
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 heat exchanger?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this heat exchanger 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 heat exchanger?
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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Mike Rivera
HVAC Parts Specialist — Online