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The genuine OEM Lennox 10P57 is a Copeland ZPS40K5E-PFV-830 scroll compressor kit rated at 41,100 BTUH, 208/230V, single phase, for R-410A systems. This ZPS-series model features Copeland's two-stage UltraTech design, allowing your Lennox unit to run at reduced capacity for quieter, more efficient operation on mild days and full capacity on peak demand. The kit includes the compressor and the mounting hardware needed for a complete replacement.
Common failure symptoms: Watch for a compressor that hums but will not start, repeated breaker trips, loss of cooling capacity, excessive noise or vibration, or a two-stage unit stuck in a single stage. Grounded or open windings and failed internal valves are typical causes of replacement.
Why OEM matters: R-410A operates at higher pressures than legacy refrigerants, so the compressor's displacement, POE oil charge, and electrical ratings must match your Lennox system exactly. The OEM 10P57 guarantees correct two-stage staging, protects efficiency ratings, and maintains warranty eligibility. Replace the filter drier and pull a deep vacuum before charging.