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The genuine OEM Lennox 11A88 is a Copeland CR35K6E-TFD-875 reciprocating compressor rated at 31,900 BTUH for 460V three-phase systems running R-22 refrigerant. This piston-driven compressor pressurizes and circulates refrigerant through your Lennox system, powering the heat-transfer cycle that delivers cooling. Reciprocating compressors are proven, robust workhorses well suited to legacy R-22 commercial and residential equipment.
Common failure symptoms: A failing reciprocating compressor may run without cooling, trip the breaker, draw excessive amperage, knock or rattle loudly, or overheat and shut down on thermal overload. Valve wear, worn piston rings, or an electrical short in the windings are typical causes. On 460V three-phase units, verify correct rotation and supply voltage during any service call.
Why OEM matters: Lennox specifies each compressor by exact capacity, refrigerant, voltage, and phase. The factory 11A88 guarantees 31,900 BTUH output and R-22 compatibility while matching the 460V three-phase electrical profile your equipment requires. Since R-22 systems are no longer manufactured, an exact OEM replacement keeps your existing refrigerant charge and metering components correctly balanced. Install the genuine Lennox part for reliable, warranty-compliant performance.