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Lennox

OEM Lennox Compressor Kit for ZR94/ZR125 — 74M28

SKU: LNX-74M28 Brand: Lennox
$389.95 $529.95

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

The genuine OEM Lennox 74M28 compressor replacement kit (Lennox assembly LB-87718B) is a complete, factory-matched solution for servicing Copeland ZR94 or ZR125 scroll compressors in your Lennox equipment. The kit compresses low-pressure refrigerant vapor into high-pressure gas, powering the heat-transfer cycle that keeps your system cooling efficiently.

Signs that a scroll compressor needs replacement include no cooling at the vents, a compressor that hums but won't start, repeated breaker trips, loud grinding or knocking, or a burnout that contaminates the refrigerant line. Because the 74M28 ships as a kit, it includes the correct hardware to complete a clean, reliable changeout.

OEM matters for Lennox: this kit is spec-matched to the ZR94 and ZR125 tonnage, electrical ratings, and mounting footprint. Using a factory-correct assembly ensures proper capacity, preserves warranty coverage, and avoids the callbacks that come with mismatched aftermarket compressors.

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 ZR94/ZR125 — 74M28?
Yes. This is the factory-specified OEM compressor for the Lennox ZR94/ZR125 — 74M28. 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 ZR94/ZR125 — 74M28?
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