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Lennox

OEM Lennox Copeland Compressor — 11A77

SKU: LNX-11A77 Brand: Lennox
$389.95 $529.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox 11A77 is a Copeland compressor that acts as the heart of your Lennox condensing unit, circulating and pressurizing refrigerant to power the cooling cycle. Manufactured to Lennox factory standards, the 11A77 installs as a true OEM replacement that returns your system to full rated performance.

Common failure symptoms: A compressor at the end of its life may buzz or hum without turning over, trip the circuit breaker, run without producing cool air, make grinding or knocking sounds, or cycle on and off too frequently. Burnt terminals, open windings, or a locked rotor are frequent culprits.

Why OEM matters: Lennox equipment is engineered around a compressor's specific capacity, oil type, and electrical characteristics. The OEM 11A77 Copeland compressor ensures exact compatibility with your unit's refrigerant charge, metering device, and controls — protecting efficiency, warranty coverage, and the long-term reliability you expect from a genuine Lennox part.

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 Compressor — 11A77?
Yes. This is the factory-specified OEM compressor for the Lennox OEM Lennox Copeland Compressor — 11A77. 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 Compressor — 11A77?
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