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The genuine OEM Lennox 11K70 is a Copeland ZP34K6E-PFV-830 scroll compressor rated at 34,900 BTUH, 208/230V, single-phase, and designed for R-410A refrigerant. It serves as the pump at the center of your Lennox outdoor unit, circulating and compressing refrigerant to remove heat from your home or building. Its single-phase, PFV-style design makes it a common fit for residential and light-commercial Lennox condensing units.
Common failure symptoms: Typical signs of compressor trouble include the outdoor fan running while the compressor stays silent, a hard hum or click with no start (often a failed start components or windings), breaker trips, overheating with overload cutouts, short-cycling, or unusual mechanical noise. Insufficient cooling and higher-than-normal energy use frequently accompany these issues.
Why OEM matters: Because R-410A operates at elevated pressures, the exact factory 11K70 compressor ensures the correct capacity, oil charge, and electrical characteristics for your Lennox system. Genuine OEM replacement protects rated efficiency, control compatibility, and warranty terms. Verify voltage, phase, and refrigerant before installing, and always have a qualified HVAC professional complete the job.