OEM Lennox Scroll Compressor 36,000 BTUH R-410A 3-Phase — 18W49

The Lennox 18W49 is a genuine OEM ZP36K5E-TF5-830 Copeland Scroll compressor rated at 36,000 BTUH (3 tons), engineered for R-410A refrigerant on a 3-phase 200/230V supply. As the primary component of your Lennox condensing unit, it compresses and circulates refrigerant to move heat out of the conditioned space. The ZP-series scroll design is purpose-built for high-pressure R-410A operation, delivering efficient, quiet, and durable performance with superior liquid-refrigerant tolerance.

Common failure symptoms: Typical signs of compressor trouble include insufficient or no cooling, a unit that hums or clicks without starting, frequently tripped breakers, elevated amp draw, overheating, unusual grinding or rattling, and short-cycling. Open windings and mechanical lockup are common end-of-life conditions.

Why OEM matters: The 18W49 is manufactured to Lennox's exact displacement, voltage, and R-410A specifications, ensuring correct capacity and safe high-side pressures. Genuine OEM compressors protect your equipment warranty and prevent the mismatched-capacity issues that plague generic replacements. Verify model, voltage, phase, and refrigerant against your unit's rating plate before purchase, and use a licensed HVAC technician for installation and system evacuation.