Lennox 89M93 Run Capacitor

As a field technician, you know that a failing compressor or fan motor often traces back to a breakdown in the Lennox 89M93 dual run capacitor. This 55/5 MFD 370V round capacitor provides the necessary phase shift for high-torque permanent split capacitor (PSC) motors found in Lennox air conditioning and heat pump systems. Engineered to high-performance standards, the 89M93 is electrically identical to the 89M9301 model, ensuring a direct drop-in replacement that maintains the original equipment manufacturer (OEM) design intent for electrical harmony. Its 370Vac 50/60Hz rating is optimized for heavy-duty cycling, making it a reliable choice for the HP32-42-230-03, HS32-042-01, and HS26-042-03 series units. The round oil-filled design allows for superior heat dissipation and internal pressure protection against catastrophic failure. When testing with a multimeter, replace if the capacitance readings drop outside the +/-5% tolerance range to prevent excessive amperage draw and winding overheating.

Key Benefits

• Direct OEM Compatibility: Verified as an identical replacement for 89M9301 and 100335-28, eliminating mounting bracket modifications.
• Dual-Action Performance: Provides a dedicated 55 microfarad lead for the compressor and a 5 microfarad lead for the condenser fan motor.
• Optimized Voltage Handling: Rated for 370 volts, providing stable microfarad delivery even during peak demand periods.
• Technical Durability: Constructed with non-PCB oil and a 10,000 AFC internal protective device for enhanced field safety.
• Wide Model Application: Engineered to fit various residential and light commercial Lennox HVAC units.

Common Questions

Can I use a 440V capacitor if the Lennox 89M93 is rated at 370V?
Yes, you can use a higher voltage rating (like 440V) as an upgrade, but you must never use a capacitor with a lower voltage rating than the system’s original 370V requirement.

Is the 89M93 compatible with Armstrong or Ducane units?
Yes, because Lennox is the parent company, this capacitor is a standard service part for Allied Air brands, including Armstrong and Ducane, provided the 55/5 MFD rating matches.

How do I know if the 89M93 or 89M9301 is the correct version?
Both part numbers represent the same technical specifications. If your service manual calls for either number, this dual run capacitor is the technically correct part for the job.

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.