Lennox by Mars®, 99W98, Run Capacitor, Dual Capacitance, 440 V, 50/60 Hz, Round

High-Performance HVAC Support – Lennox by Mars® 99W98 30/10 MFD Dual Run Capacitor, 440V

The Lennox by Mars® 99W98 capacitor is designed to deliver stable, efficient operation in dual-motor HVAC systems. With a combined capacitance of 30/10 microfarads and a voltage rating of 440V, this round dual run capacitor supports both the compressor and fan motor in air conditioning units, improving power factor and reducing system stress during start-up and operation.

Contractor-Grade Design and Application

Specifically engineered for use in Lennox equipment, the 99W98 features aluminum construction, oil-filled internals, and a sealed round body that resists corrosion and vibration fatigue. This dual-rated run capacitor offers consistent electrical performance across a range of environmental conditions, making it a reliable choice for system maintenance and retrofit work.

Key Characteristics

• ✅ Dual Section Ratings: 30/10 MFD capacitance for combined compressor and fan motor operation
• ✅ Voltage Rating: 440 VAC for high-load HVAC applications
• ✅ Application-Specific Fit: OEM-matched for Lennox systems
• ✅ Round Metal Canister: Facilitates installation in standard mounting brackets
• ✅ Hermetically Sealed: Provides protection against humidity and debris

Technical Specifications

• Capacitance: 30/10 microfarads (dual run)
• Voltage Rating: 440V AC
• Configuration: Round can, dual terminals
• Operating Frequency: 50/60 Hz
• Construction: Oil-filled, non-PCB dielectric

Installation Considerations

For optimal results and adherence to safety protocols, installation should be performed by an HVAC technician familiar with system wiring and capacitor discharge procedures. Confirm voltage isolation before installation. Always use a microfarad tester or multimeter to verify capacitance before startup.

Contractor Notes

• Use this model as a direct replacement for OEM dual capacitors in compatible Lennox rooftop and split systems
• Ensure proper mounting orientation to mitigate vibration-related wear
• Verify label ratings to match system design criteria

Reliability Where It Matters

The Mars 99W98 dual capacitor delivers robust motor start and run support in a compact, field-proven package. Suitable for commercial and residential Lennox units requiring a 30/10 MFD 440V configuration, it ensures HVAC equipment performs to engineered expectations under continuous load.