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Lennox

OEM Lennox Copeland Scroll Compressor — 11B42

SKU: LNX-11B42 Brand: Lennox
$389.95 $529.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox 11B42 Copeland scroll compressor powers the refrigeration cycle in your outdoor condensing unit, compressing and circulating refrigerant to remove heat from your home. Copeland scroll technology is known for its quiet, efficient, and durable performance, and this factory-matched unit meets the exact capacity, refrigerant, and voltage specifications of your Lennox system.

Common failure symptoms: Signs of a failing compressor include an outdoor unit that no longer cools, warm air at the registers, loud humming or rattling noises, frequent circuit breaker trips, and shutdowns triggered by the internal overload protector. A compressor that buzzes but fails to start or draws high current is usually nearing failure.

Why OEM matters: Using the correct OEM Lennox 11B42 compressor ensures proper refrigerant charge, rated efficiency, and safe electrical operation. Non-OEM replacements can introduce capacity mismatches, oil compatibility problems, and early breakdowns. The factory part protects your equipment warranty and restores your Lennox system to its intended performance. In stock and ships same day before 3PM CST.

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 Compressor fit my Lennox OEM Lennox Copeland Scroll Compressor — 11B42?
Yes. This is the factory-specified OEM compressor for the Lennox OEM Lennox Copeland Scroll Compressor — 11B42. 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 compressor on my Lennox OEM Lennox Copeland Scroll Compressor — 11B42?
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 compressor?
Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.
Is this compressor 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 compressor?
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