Lennox 11C31 Compressor

The Lennox 11C31 is a high-performance Copeland Scroll Compressor designed as a direct OEM replacement for legacy units, specifically replacing part numbers 97M94 and 15M64. Engineered for residential and light commercial R-22 refrigerant systems, this 2.5-ton nominal capacity motor (31,300 BTU/HR) operates on a standard 208/230V single-phase power supply at 60Hz. As a scroll-style compressor, it utilizes two meshing spiral scrolls to compress refrigerant, offering superior volumetric efficiency and quieter operation compared to traditional reciprocating models. For field technicians, the 11C31 provides a reliable drop-in solution for maintaining system integrity in older HVACR condensers, ensuring consistent 31.3k BTU cooling output. Its robust construction is balanced for high-pressure R-22 applications, delivering the durability required for demanding duty cycles in the field.

• Direct Compatibility: Engineered as the primary replacement for Lennox 97M94 and 15M64 to simplify field installation.
• Scroll Technology: Provides enhanced energy efficiency and lower noise levels than older piston-based compressors.
• Verified Performance: Delivers a consistent 31,300 BTU cooling capacity for balanced system performance.
• Broad Application: Designed specifically for 208/230V 1Ph electrical configurations common in residential split systems.
• OEM Reliability: Built to original manufacturer specifications to ensure proper fitment and long-term refrigeration cycles.

What refrigerant is the Lennox 11C31 compatible with?
This compressor is specifically designed for R-22 systems but is often cross-referenced for R-407C retrofits when used with compatible POE oil and proper system flushing.

Can I use this to replace a 3-ton compressor?
The 11C31 is rated at 31,300 BTU, which falls into the 2.5-ton to 3-ton range. Always verify the full-load amps (FLA) and BTU requirements of the specific condenser model before installation.

What are the electrical requirements for installation?
This unit requires a 208/230V, 60Hz, single-phase power source. It is recommended to replace the run capacitor (typically 50 MFD @ 370 VAC) during the compressor swap to ensure reliable startup.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.