OEM Lennox Scroll Compressor 52,200 BTU 575V R-22 — 11C54

The genuine OEM Lennox 11C54 is a Copeland ZR54K5E-TFE-800 scroll compressor rated at 52,200 BTUH, 575V, 3-phase, for R-22 systems. This compressor is the core component of your Lennox condensing unit, compressing low-pressure refrigerant vapor and circulating it through the condenser and evaporator to move heat out of the conditioned space. The scroll mechanism provides smooth, reliable performance with high volumetric efficiency.

Common failure symptoms: no cooling despite the fan running, hard-starting or repeated breaker trips, excessive noise or vibration, an open or shorted winding at the compressor terminals, or an internal overload that keeps cutting out. Warm supply air and short-cycling frequently point to a failing compressor.

Why OEM matters: the factory-specified 11C54 guarantees the exact capacity, 575V 3-phase electrical rating, oil charge, and connection layout your Lennox unit was engineered around. Choosing the correct OEM part preserves rated efficiency, protects any remaining warranty, and prevents the capacity and electrical mismatches that shorten the life of aftermarket replacements. Confirm the voltage, refrigerant, and model application before installing, and replace the liquid-line filter drier with every compressor changeout.