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The Lennox 15W33 is a genuine OEM scroll compressor (Copeland ZR54K3-TFE-830) rated at 54,500 BTUH, running on 575V, 3-phase power with R-22 refrigerant. As the heart of your Lennox condensing unit, this compressor pressurizes and circulates refrigerant through the system, driving the heat-transfer cycle that keeps your space cool. Its scroll design delivers smooth, efficient operation with fewer moving parts than reciprocating compressors, meaning quieter running and longer service life.
Common failure symptoms: If your 15W33 is failing, watch for a system that runs but won't cool, loud grinding or humming on startup, tripped breakers, a compressor that hums but won't start (often a locked rotor), or a unit that short-cycles. Burnt terminals, oil leaks, or a compressor that overheats and shuts down on thermal overload are also telltale signs of end-of-life.
Why OEM matters: Installing the factory-spec 15W33 guarantees exact displacement, electrical characteristics, and mounting fitment for your Lennox equipment. Aftermarket substitutes can mismatch capacity or oil charge, voiding warranties and shortening system life. Choose OEM for rated performance, proper refrigerant compatibility, and peace of mind. In stock and ships same day before 3PM CST.