OEM Lennox Tandem Scroll Compressor Assembly — 11G94

The genuine OEM Lennox 11G94 tandem scroll compressor assembly combines two scroll compressors into a single factory-matched unit, providing multi-stage capacity that lets your Lennox system match output to cooling demand for better comfort and efficiency. As the pump that moves refrigerant through the circuit, this assembly is essential to your system's ability to transfer heat and maintain set-point temperatures.

Common failure symptoms include warm air from the vents, breakers that trip on start-up, unusual grinding or knocking sounds, a compressor that buzzes without starting, or short cycling. Elevated amp draw, overheating, and shorted or open windings are signs the compressor has failed internally and needs to be replaced.

Why OEM matters: A tandem compressor is engineered specifically for your unit's capacity, refrigerant type, and voltage. Choosing the exact Lennox-specified 11G94 guarantees the correct physical fit, oil charge, and electrical match while protecting your warranty coverage. Non-OEM alternatives can introduce capacity and reliability problems that shorten equipment life. Compressor replacement should be handled by a certified HVAC professional who can properly recover, evacuate, and recharge the refrigerant system.