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OEM Lennox Burner Box Bottom — 19C73
Lennox

OEM Lennox Burner Box Bottom — 19C73

SKU: LNX-19C73 Brand: Lennox
$49.95 $69.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox 19C73 burner box bottom serves as the base of the burner compartment in your Lennox gas furnace. It cradles and positions the burner assembly, seals the lower portion of the combustion area, and combines with the box top and support hardware to maintain precise burner alignment with the orifices and heat exchanger ports for consistent, safe ignition.

If the burner box bottom corrodes, warps, or cracks, you may see burners drifting out of position, uneven or lifting flames, rough or delayed ignition, air leaks that disrupt combustion, and rattling or rollout trips. A compromised base panel weakens both burner support and the sealed integrity the furnace relies on for efficient heating.

OEM is essential because 19C73 is built to Lennox's exact dimensions, gauge, and heat tolerance, guaranteeing a flush fit that holds the burners in their engineered geometry. Non-OEM substitutes risk poor sealing and misalignment. Install this factory-original Lennox base panel to restore proper burner support and a correctly sealed combustion compartment.

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 Burner fit my Lennox OEM Lennox Burner Box Bottom — 19C73?
Yes. This is the factory-specified OEM burner for the Lennox OEM Lennox Burner Box Bottom — 19C73. 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 Burner Box Bottom — 19C73?
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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Mike Rivera
HVAC Parts Specialist — Online