OEM Lennox Scroll Compressor 57,500 BTUH 200/230V 3-Phase — 38M79

The genuine OEM Lennox 38M79 is a Copeland ZP57K3E-TF5-830 scroll compressor rated at 57,500 BTUH (approximately 4.75 tons) and built for 200/230V, 3-phase, R-410A systems. As the heart of your Lennox condensing unit, this compressor circulates refrigerant and provides the compression that drives the entire cooling cycle. Its scroll design delivers quieter, more efficient, and more reliable operation than older reciprocating compressors.

Common failure symptoms: When the 38M79 begins to fail, you may notice the outdoor unit humming or clicking but not starting, tripped breakers, warm air from the vents, loud grinding or knocking noises, or the compressor short-cycling on its internal overload. A locked rotor, open windings, or grounded motor typically means full replacement is required.

Why OEM matters: Lennox systems are engineered around exact compressor displacement, oil charge, and electrical characteristics. Installing the factory-specified 38M79 guarantees correct capacity matching, proper refrigerant flow, and full compatibility with your unit's controls — protecting your warranty and system efficiency. Aftermarket substitutes can cause capacity mismatches, premature failure, and voided coverage. Always verify the model against your unit's data plate, evacuate and recharge to spec, and replace the filter drier during installation.