Lennox 89M76 Round Capacitor

Upgrade or service your Lennox condensing unit with the Lennox 89M76 Dual Run Capacitor, the factory-specified replacement for the legacy 89M7601 part number. This heavy-duty 45+5 MFD 370V capacitor is engineered for high-demand HVACR applications, providing the phase-shifting torque necessary for the compressor and the condenser fan motor to initiate and maintain efficient operation. Built with a durable round aluminum casing and high-grade metallized film dielectric, the 89M76 ensures minimal ESR (Equivalent Series Resistance) and thermal stability during peak summer loads.

As a veteran technician knows, matching the exact 45/5 microfarad rating is critical for maintaining the specific motor winding impedance required by Lennox and Armstrong systems. This 370 VAC round capacitor features standard ¼-inch male quick-connect terminals clearly marked for HERM, FAN, and C (Common) to ensure a fast, error-free installation. Replacing a weak or "bulged" capacitor with this OEM Lennox 89M76 prevents excessive amperage draw, protecting your equipment from premature motor failure and ensuring the system operates at its designed SEER efficiency.

• OEM Compatibility: Precision-engineered as a direct replacement for 89M7601 and 100335-08 in Lennox residential and light commercial platforms.
• Dual-Run Efficiency: Supports both the compressor (45 MFD) and condenser fan motor (5 MFD) from a single compact component.
• Optimized Performance: Maintains the required phase angle to maximize motor torque and reduce wasted energy.
• Rugged Construction: Designed for reliability in harsh outdoor environments with high-tolerance electrical internal components.

Can I use a 440V capacitor to replace the 370V Lennox 89M76?
Yes. While you must never use a capacitor with a lower voltage rating, a 440V capacitor is a safe upgrade for a 370V circuit, provided the 45+5 MFD capacitance remains identical.

How do I know if the 89M76 needs replacement?
Check for physical swelling, oil leaks, or use a multimeter to measure the capacitance between the Common and HERM/FAN terminals. If the reading is outside the standard ±5% or ±10% tolerance, replacement is required to protect the motors.

Is the 89M76 compatible with Armstrong or Ducane units?
Yes, since Lennox is the parent company, this 45/5 370V capacitor is frequently found in Armstrong and Ducane condensing units specifying these same electrical characteristics.

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.