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Genuine OEM Lennox 55W26 Copeland ZP42K5E-PFJ-830 scroll compressor. Rated at 35,000 BTUH on 220/240V, single-phase, 50 Hz power for R-410A refrigerant, this compressor is the core of your Lennox cooling system — compressing and circulating refrigerant to transfer heat from indoors to the outdoor unit. Its ZP-series scroll design is engineered specifically for high-pressure R-410A operation, delivering efficient, low-vibration performance.
Common failure symptoms: Typical signs of a failing compressor include the system running but not cooling, warm air at the registers, unusual humming, clicking, or grinding, frequent breaker trips, and a unit that won't start. Electrical short-cycling and loss of compression usually indicate end of service life.
Why OEM matters: The 55W26 is matched to your Lennox system's 50 Hz single-phase supply and R-410A charge. Choosing the correct OEM compressor maintains rated capacity, safeguards your warranty, and avoids the pressure and electrical mismatches common with aftermarket parts. Replacement requires a licensed HVAC technician for proper evacuation, brazing, and charging.