What are the specs for this Compressor?

The correct replacement for Lennox model OEM Lennox Tandem Scroll Compressor 39,000 BTUH 575V — 11X99 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 Tandem Scroll Compressor 39,000 BTUH 575V — 11X99.

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 Tandem Scroll Compressor 39,000 BTUH 575V — 11X99

Name: OEM Lennox Tandem Scroll Compressor 39,000 BTUH 575V — 11X99
Brand: Lennox
SKU: LNX-11X99
Price: 389.95 USD
Availability: InStock

SKU: LNX-11X99 Brand: Lennox

$389.95 $529.95

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The Lennox 11X99 is a genuine OEM tandem scroll compressor assembly featuring ZP39K5E-TFE compressors rated at 39,000 BTUH, designed for R-410A refrigerant on 575V 3-phase power. Mounted on a shared manifold, this tandem configuration stages cooling capacity to match load, delivering efficient part-load operation, improved humidity control, and quieter performance. It is a direct factory-matched replacement for compatible Lennox systems.

Common Failure Symptoms

Reduced or no cooling on one or both stages
Compressor hums but won't start, or trips the breaker
Loud grinding, rattling, or knocking sounds
Short-cycling and failure to reach setpoint
Internal overload tripping from overheating

Why OEM Matters

The genuine Lennox 11X99 matches the exact displacement, 575V electrical rating, and R-410A compatibility your equipment was engineered for. Mismatched compressors risk capacity loss, staging faults, and premature failure. Choose OEM to maintain rated efficiency, ensure a bolt-in fit, and protect your Lennox warranty.

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 Tandem Scroll Compres...

$389.95

Frequently Asked Questions

Does this Compressor fit my Lennox OEM Lennox Tandem Scroll Compressor 39,000 BTUH 575V — 11X99?

Yes. This is the factory-specified OEM compressor for the Lennox OEM Lennox Tandem Scroll Compressor 39,000 BTUH 575V — 11X99. 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 Tandem Scroll Compressor 39,000 BTUH 575V — 11X99?

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.