Lennox 72W39 Capacitor 30067439-890 The MK-6821 serves as the

The MK-6821 serves as the professional direct replacement for MK-6721 and MK-6821-701 models

04 is engineered for electronic intermittent ignition

Simple slide-in installation for rapid field service and maintenance

Field technicians frequently utilize the Lennox 81L75 as a primary HVAC circuit board replacement when diagnosing intermittent fan failures or airflow stagnation issues

Broad Compatibility: Direct fit for dozens of Lennox GCS and CHA series rooftop units and commercial condensers

Lennox 72W39 Capacitor 30067439-890 The MK-6821 serves as theUpgrade your condenser service with the Lennox 72W39 75 10 MFD 440V Round Dual Run Capacitor, a professional grade electrical component engineered for high demand cooling systems. This 75 10 MFD 440V run capacitor is the industry standard direct replacement for legacy part numbers 100335 51 and 72W3901, ensuring seamless integration into Lennox 14ACX and 14HPX series units. As a dual run capacitor, it provides dedicated starting and running torque for