OEM Lennox Scroll Compressor 68,000 BTUH 575V 3-Phase — 11B72

The Lennox 11B72 is a genuine OEM ZR68KCE-TFE-830 Copeland Scroll compressor rated at 68,000 BTUH, wired for 575V 3-phase power commonly found in commercial and light-industrial Lennox equipment. This compressor drives the refrigeration cycle by compressing refrigerant vapor and circulating it through the condenser and evaporator to remove heat. The heavy-duty ZR-series scroll design offers high efficiency, low vibration, and robust reliability suited to demanding commercial duty cycles.

Common failure symptoms: Look for loss of cooling capacity, a compressor that buzzes or trips overloads without starting, breaker trips, high amp draw, overheating, loud knocking or grinding, and short-cycling. On 575V commercial units, phase-loss and voltage-imbalance damage are frequent causes of compressor burnout.

Why OEM matters: The 11B72 is built to Lennox's precise capacity, 575V electrical, and refrigerant specifications, ensuring correct sizing and safe operation on 3-phase commercial power. Genuine OEM replacement safeguards your warranty and avoids costly downtime from mismatched parts. Always confirm the model, voltage, and phase against your unit's data plate before ordering, and have a qualified commercial HVAC technician perform the installation, wiring, and evacuation.