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Genuine OEM Lennox 79M46 scroll compressor (model ZR144KC-TFE-950) is rated at 146,000 BTUH on 575V R-22 3-phase power, making it the workhorse of your commercial Lennox cooling system. It compresses refrigerant vapor into a high-pressure gas so heat can be discharged at the condenser, powering the complete refrigeration cycle. The scroll design ensures efficient, quiet, and reliable compression under heavy commercial loads.
Common indicators of compressor failure include continuous running without cooling, tripped breakers or contactors on startup, hard-start conditions, abnormal noise and vibration, elevated amperage, and lockouts triggered by the internal overload. High-hour R-22 units frequently suffer oil breakdown and internal contamination before mechanical failure.
Selecting the OEM Lennox 79M46 guarantees a factory-exact match for your unit's 575V supply, R-22 charge, and 146,000 BTUH capacity, including the correct oil volume, displacement, and terminal configuration. Genuine parts protect system efficiency, prevent oil-migration problems, and preserve warranty coverage that aftermarket compressors can void. Install this authentic replacement for dependable, rated Lennox performance.