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The genuine OEM Lennox 78M49 is a Copeland ZR81KC-TF5-830 scroll compressor rated at 81,500 BTUH, 200/230V, R-22 refrigerant, 3-phase. As the core of your Lennox condensing unit, it compresses and circulates refrigerant using interleaved scroll plates for smooth, energy-efficient, low-vibration operation. This part is manufactured to Lennox factory specifications to preserve the system's rated capacity and efficiency.
Common failure symptoms include the unit not cooling, the compressor humming without starting, repeated breaker trips, loud knocking or grinding, short-cycling, and abnormally high current draw. Scroll compressor failures often stem from electrical faults, weak run capacitors, or lubrication loss over time.
Why OEM matters: The genuine Lennox 78M49 guarantees the correct 200/230V electrical rating, displacement, and refrigerant match for your Lennox equipment. Aftermarket substitutes can create capacity and voltage mismatches, shorten service life, and void your warranty. Installation and refrigerant recovery should be performed by a licensed HVAC technician. In stock and ships same day when ordered before the daily cutoff.