What are the specs for this Compressor?

The correct replacement for Lennox model OEM Lennox Copeland Scroll Compressor — 11C42 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 Copeland Scroll Compressor — 11C42.

What symptoms indicate I need a new compressor?

Common symptoms that indicate you need a new compressor include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

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Lennox

OEM Lennox Copeland Scroll Compressor — 11C42

Name: OEM Lennox Copeland Scroll Compressor — 11C42
Brand: Lennox
SKU: LNX-11C42
Price: 389.95 USD
Availability: InStock

SKU: LNX-11C42 Brand: Lennox

$389.95 $529.95

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The genuine OEM Lennox 11C42 Copeland Scroll compressor is the core component that pressurizes and circulates refrigerant through your Lennox air conditioner or heat pump. Scroll technology compresses refrigerant with a pair of nested spiral scrolls, producing smooth, efficient, and low-vibration operation. Manufactured to exact Lennox specifications, the 11C42 drops into the outdoor units it was engineered for, matching capacity, electrical draw, and refrigerant compatibility.

Common failure symptoms include a condenser that buzzes but fails to start, repeated breaker trips, warm supply air while the outdoor fan runs, grinding or knocking noises, and shutdowns triggered by the internal overload protector. A compressor leaking oil or emitting a burnt odor has typically suffered an internal electrical or mechanical failure.

Why OEM matters: Lennox pairs each system with a specific compressor for the correct performance curve and control response. Installing the OEM 11C42 preserves your unit's rated efficiency and warranty coverage and avoids the short cycling and reduced cooling that come with mismatched aftermarket parts. Have a licensed HVAC technician recover refrigerant and complete the installation.

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 Copeland Scroll Compr...

$389.95

Frequently Asked Questions

Does this Compressor fit my Lennox OEM Lennox Copeland Scroll Compressor — 11C42?

Yes. This is the factory-specified OEM compressor for the Lennox OEM Lennox Copeland Scroll Compressor — 11C42. 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 — 11C42?

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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OEM Lennox Copeland Scroll Compressor — 11C42

Shipping Information

Return Policy

Frequently Asked Questions