OEM Lennox R-410A Scroll Compressor 51,500 BTUH 230V — 28W85

The genuine OEM Lennox 28W85 is a Copeland ZP51K5E-TF5-830 scroll compressor built for R-410A systems, rated at 51,500 BTUH on 208/230-volt, 3-phase power. Designed specifically for the higher operating pressures of R-410A refrigerant, this compressor drives the refrigeration cycle in your Lennox condensing unit and delivers efficient, quiet scroll operation. It is the correct replacement for modern R-410A Lennox equipment that cannot use legacy R-22 compressors.

Common failure symptoms: loss of cooling, tripped breakers or internal overload, loud mechanical noise on startup, hard-starting or failure to start, abnormally high or low suction/discharge pressures, and grounded or open windings. R-410A units running low on charge or with restricted airflow accelerate compressor wear.

Why OEM matters: the 28W85 is engineered to Lennox's exact R-410A capacity, oil (POE), and electrical requirements. Using the OEM compressor maintains warranty eligibility and ensures the correct pressure envelope for R-410A operation — critical because R-410A runs roughly 50–70% higher pressures than R-22. Substitute parts risk oil incompatibility and dangerous over-pressure. Replace the filter drier, evacuate to a deep vacuum, and verify charge to nameplate before startup.