OEM Lennox Interlink Compressor — 15Y42

The genuine OEM Lennox 15Y42 Interlink compressor is the heart of your Lennox air conditioning or heat pump system, circulating refrigerant through the sealed system to move heat and deliver reliable cooling. Engineered to Lennox factory specifications, it drops directly into compatible Lennox condensing units and outdoor sections for a precise, no-guesswork fit.

When a compressor begins to fail, you'll typically notice symptoms such as warm air from the supply registers, the outdoor unit humming but not starting, tripped breakers, hard-starting, loud grinding or rattling noises, or a system that short-cycles and never reaches temperature. A seized or electrically shorted compressor will stop cooling entirely.

Choosing an OEM Lennox 15Y42 compressor matters because it is matched to your unit's designed refrigerant charge, oil type, and electrical characteristics. Aftermarket substitutes can throw off capacity, void warranty coverage, and shorten system life. Installing the correct factory part protects your equipment's efficiency rating and keeps your Lennox system running as designed. Professional installation by a licensed HVAC technician is recommended, and always recover refrigerant properly before servicing.