Lennox 100335-56 Dual Run Capacitor – 30/10 MFD, 440 VAC, Round – Cat # 99W98

The Lennox 100335-56 Dual Run Capacitor is an HVAC replacement capacitor designed to provide reliable run capacitance for both the compressor and condenser fan motor in compatible Lennox air conditioning and heat pump systems. Rated at 30/10 MFD and 440 VAC, this round dual run capacitor combines two capacitor functions into one convenient component.

The 30 MFD section supports the compressor while the 10 MFD section supports the condenser fan motor. Installing the correct capacitor helps maintain proper motor performance, operating amperage, system efficiency, and dependable cooling operation.

Key Features and Function:

• 30/10 MFD Dual Capacitance – Supports both the compressor and condenser fan motor

• 30 MFD Compressor Section – Provides run capacitance for the compressor

• 10 MFD Fan Section – Provides run capacitance for the condenser fan motor

• 440 VAC Rating – Designed for compatible HVAC electrical applications

• Round Configuration – Fits compatible round capacitor mounting brackets

• Dual Run Design – Combines two motor run capacitor functions into one component

• Lennox Replacement Part – Designed for compatible Lennox HVAC equipment

Product Details and Key Specifications:

• Part Number: 100335-56

• Catalog Number: 99W98

• Manufacturer: Lennox

• Part Type: Dual Run Capacitor

• Capacitance: 30/10 MFD (µF)

• Compressor Section: 30 MFD

• Fan Section: 10 MFD

• Voltage Rating: 440 VAC

• Shape: Round

• Terminal Configuration: C / HERM / FAN

• C Terminal: Common

• HERM Terminal: Compressor

• FAN Terminal: Condenser Fan Motor

• Application: Air Conditioners, Heat Pumps, and Condensing Units

• Function: Provides continuous run capacitance for the compressor and condenser fan motor

• Installation Type: HVAC Replacement Capacitor

• Compatible Brand: Lennox

🛠️ HVAC Depot Pro Tip: Match Both MFD Values Exactly

When replacing the Lennox 100335-56, always match both capacitance values: 30 MFD and 10 MFD.

Do not substitute a 30/5, 35/10, or another MFD combination simply because the capacitor fits physically. Incorrect capacitance can cause increased amperage, overheating, poor motor performance, and premature component failure.

A 440 VAC capacitor can generally replace a 370 VAC capacitor of the same MFD rating, provided the physical size and application are compatible.

Cross-Reference & Compatibility:

The Lennox 100335-56 / 99W98 is intended for compatible HVAC equipment requiring:

• OEM Part Number: 100335-56

• Catalog Number: 99W98

• Capacitance: 30/10 MFD

• Voltage Rating: 440 VAC

• Shape: Round

• Type: Dual Run Capacitor

• Terminal Configuration: C / HERM / FAN

• Application: Compressor and Condenser Fan Motor

• Compatible Equipment: Select Lennox air conditioners, heat pumps, condensing units, and HVAC equipment requiring a 30/10 MFD 440V round dual run capacitor

Always verify the equipment model number, capacitance, voltage rating, physical dimensions, and terminal configuration before ordering.

Extensive Equipment Compatibility:

Typical Applications:

• Lennox Air Conditioners

• Lennox Heat Pumps

• Lennox Condensing Units

• Residential Split Systems

• Light Commercial HVAC Systems

• Outdoor Condenser Assemblies

• Systems Requiring a 30/10 MFD Dual Run Capacitor

• Compatible Lennox Equipment Requiring Part 100335-56