30/10 MFD Round Dual Run Capacitor, 440V

Lennox by Mars® 99W98 – 30/10 MFD 440V Round Dual Run Capacitor The 99W98 capacitor is a dual-value motor run capacitor rated at 30/10 microfarads (MFD) with a voltage rating of 440 VAC. It is housed in a round aluminum case and serves both the compressor and the fan motor in HVAC systems utilizing permanent split capacitor (PSC) motors. This component is typically installed in residential and light commercial air conditioning or heat pump units. It provides continuous run support and helps stabilize motor operation under load. Technical Specifications OEM Model: 99W98 Capacitance: 30/10 µF (±6% tolerance) Voltage Rating: 440 VAC Configuration: Dual run capacitor (compressor and fan motor) Frequency: 50/60 Hz Case Style: Round aluminum housing Terminal Style: ¼″ male quick-connect terminals, 3-terminal configuration (C, FAN, HERM) Safety Certification: UL 810 recognized, 5000 AFC rating Dielectric Fluid: Non-PCB Application and Compatibility Designed for Lennox systems requiring 30/10 MFD at 440V Suitable for compressors and condenser fan motors in air-cooled split systems Intended for PSC motors that require separate capacitance values for dual components Replaces standard dual capacitors within the same rating and voltage class Installation Notes Always disconnect power and discharge the existing capacitor before handling Verify terminal labeling and match correct connections (C to line, FAN to fan motor, HERM to compressor) Mount using standard round strap or capacitor clamp Only qualified HVAC technicians should install or service electrical components to ensure safety and code compliance Contractor Considerations OEM rating ensures proper fit and function in Lennox equipment Aluminum case with integrated interrupter for internal pressure protection 440V rating allows for additional headroom in high-load environments Reduces motor wear and extends system lifespan when properly matched and maintained