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The genuine OEM Lennox 12Y45 is an Interlink ABA051TAA scroll compressor rated at 51,500 BTUH, 575V, R-410A refrigerant, 3-phase. Designed for larger commercial Lennox condensing and heat-pump units, this compressor pressurizes refrigerant to drive the cooling cycle and deliver full rated capacity. Its high-voltage 575V scroll design provides dependable, efficient operation matched to your Lennox equipment.
Common failure symptoms: Watch for the compressor humming or clicking without starting, tripped high-voltage breakers or contactors, loss of cooling, warm discharge air, loud metallic or grinding noises, high amp draw, or overheating that trips the internal overload. Locked rotors and burned-out windings are common indicators the 12Y45 needs replacement.
Why OEM matters: This factory-authorized compressor is engineered to Lennox's exact displacement, 575V electrical, and R-410A specifications, ensuring correct capacity, oil charge, and current draw. Non-OEM substitutes risk voltage and capacity mismatches, oil-management issues, and premature burnout while voiding warranty coverage. Choose the OEM 12Y45 to preserve the performance and lifespan of your Lennox system.