Lennox by Mars® 89M76 Dual Run Capacitor – 45/5 MFD, 370V, Round
The 89M76 is a dual-section run capacitor designed for use in Lennox HVAC systems that utilize permanent split capacitor (PSC) motors. With a capacitance rating of 45/5 microfarads (μF) and a voltage rating of 370V AC, it supplies continuous-duty support to both compressor and condenser fan motor circuits within a single housing.
Constructed with metallized polypropylene film and enclosed in a round aluminum case, the 89M76 features an internal pressure-sensitive interrupter for fault protection. It includes standard ¼" male quick-connect terminals to facilitate direct OEM replacement in systems requiring a dual-capacitance configuration.
Technical Specifications:
Manufacturer: Mars®
OEM Reference: Lennox 89M76
Capacitance: 45/5 MFD (μF)
Voltage Rating: 370V AC
Shape: Round
Terminal Type: ¼" quick-connect (male)
Frequency: 50/60 Hz
Dielectric: Metallized polypropylene film
Enclosure: Aluminum case
Safety Feature: Internal pressure-sensitive interrupter
Operating Temperature Range: -40°C to +70°C
Compliance: UL 810 certified
Application Overview:
Intended for PSC motor circuits in Lennox HVAC equipment, supporting both compressor and fan motor operation.
Compatible with residential and light commercial systems requiring a dual-capacitor rated 45/5 MFD at 370V AC.
Functions as a direct OEM replacement part for existing capacitors within the same specification range.
Installation Notes:
Ensure system power is completely disconnected and capacitor is safely discharged before servicing.
Match both capacitance and voltage ratings with original equipment.
Connect terminals according to standard labeling: C (Common), FAN, and HERM (Compressor).
Mount securely and protect from vibration and environmental exposure.
All installations should conform to local code and manufacturer requirements.
The 89M76 dual run capacitor provides Lennox systems with reliable, continuous electrical support for dual motor applications. It is engineered for long service life in high-demand environments and conforms to original design specifications.