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The Lennox 12J58 is a genuine OEM Copeland ZP49K6E-PFV-830 scroll compressor rated at 49,800 BTUH (approximately 4 tons) for 208/230V, single-phase, R-410A systems. As the primary component of your Lennox condensing unit, this compressor pressurizes R-410A refrigerant to power the cooling cycle. The ZP-series scroll is specifically designed for the higher operating pressures of R-410A, delivering efficient, quiet, and durable performance in modern Lennox equipment.
Common failure symptoms: Signs of a failing compressor include a unit that runs but won't cool, tripped breakers, a compressor that hums but won't start (often a bad start capacitor or hard-locked rotor), loud knocking or grinding, high amp draw, or repeated cycling on thermal overload. Burnt terminals or a grounded winding confirm the compressor needs replacement.
Why OEM matters: The 12J58 is engineered to your Lennox system's exact 208/230V single-phase rating, R-410A pressure requirements, displacement, and POE oil charge. Using a non-OEM compressor risks refrigerant and oil incompatibility, capacity mismatch, warranty loss, and premature failure. This authentic OEM unit ensures correct fit, rated capacity, and reliable long-term operation.