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Lennox 19J31 Dual Run Capacitor – 55/5 MFD, 440 VAC, Round

Lennox 19J31 Dual Run Capacitor – 55/5 MFD, 440 VAC, Round

Low stock: 2 left

Regular price $39.99 USD
Regular price Sale price $39.99 USD
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Key Features & Specifications

  • FirstChoice 55/5 MFD round dual run capacitor

  • 440 VAC rating for reliable HVAC operation

  • 55 MFD compressor section and 5 MFD condenser fan section

  • C, HERM, and FAN terminal configuration

  • Replacement for compatible air conditioners, heat pumps, and condensing units

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Specifications

Product Details and Key Specifications:

Part Number: 19J31

Catalog Number: 19J31

Manufacturer: FirstChoice®

Part Type: Dual Run Capacitor

Capacitance: 55/5 MFD (µF)

Compressor Section: 55 MFD

Fan Section: 5 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 run capacitance for the compressor and condenser fan motor

Installation Type: HVAC Replacement Capacitor

description

FirstChoice® 19J31 Dual Run Capacitor – 55/5 MFD, 440 VAC, Round

The FirstChoice® 19J31 Dual Run Capacitor is a high-quality HVAC replacement capacitor designed to operate both the compressor and condenser fan motor from a single component. Rated at 55/5 MFD and 440 VAC, this round dual run capacitor provides dependable electrical performance for compatible residential and light commercial air conditioners, heat pumps, and condensing units.

The dual-section design provides 55 MFD for the compressor and 5 MFD for the condenser fan motor. By combining both capacitance requirements into one capacitor, the FirstChoice 19J31 provides a compact and convenient replacement solution for HVAC systems requiring these exact electrical specifications.


Key Features and Function:

55/5 MFD Dual Capacitance – Supports both the compressor and condenser fan motor

55 MFD Compressor Section – Provides run capacitance for compatible HVAC compressors

5 MFD Fan Section – Provides run capacitance for compatible condenser fan motors

440 VAC Rating – Designed for reliable operation in demanding HVAC applications

Round Configuration – Fits compatible round capacitor mounting brackets

Dual Run Design – Combines compressor and fan motor capacitance into one component


Product Details and Key Specifications:

Part Number: 19J31

Catalog Number: 19J31

Manufacturer: FirstChoice®

Part Type: Dual Run Capacitor

Capacitance: 55/5 MFD (µF)

Compressor Section: 55 MFD

Fan Section: 5 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 run capacitance for the compressor and condenser fan motor

Installation Type: HVAC Replacement Capacitor


🛠️ HVAC Depot Pro Tip: Match Both MFD Ratings

When replacing a dual run capacitor, always match both microfarad ratings exactly. For the FirstChoice 19J31, the required capacitance is 55/5 MFD.

A weak capacitor can cause hard starting, increased amperage, overheating, intermittent operation, or premature compressor and fan motor failure. Always disconnect power and properly discharge the capacitor before servicing HVAC electrical components.


Cross-Reference & Compatibility:

The FirstChoice 19J31 is designed for HVAC equipment requiring:

Part Number: 19J31

Capacitance: 55/5 MFD

Voltage Rating: 440 VAC

Shape: Round

Capacitor Type: Dual Run

Terminal Configuration: C / HERM / FAN

Application: Compressor and Condenser Fan Motor

Compatible Equipment: Residential and light commercial air conditioners, heat pumps, and condensing units requiring a 55/5 MFD 440V round dual run capacitor

Always verify the capacitance, voltage rating, physical dimensions, terminal configuration, and mounting requirements before ordering.

 

Specification

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Last Updated: June 2026

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HVAC Parts & Equipment Depot
1135 E Plano Parkway, Suite 8
Plano, TX 75074
United States

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Many HVAC products require installation by a licensed HVAC professional.

HVAC Parts & Equipment Depot is not responsible for damages resulting from improper installation, misuse, unauthorized modifications, or failure to follow manufacturer instructions.

Special Orders

Special-order products must be picked up within 30 days of purchase unless other arrangements have been approved.

Unclaimed special-order products may be returned to the manufacturer and may be subject to applicable restocking fees.

Contact Us

If you have questions regarding returns, refunds, or exchanges, please contact us:

HVAC Parts & Equipment Depot

Phone: (214) 734-5222
Email: support@tophvacparts.com

Michel & Siso are very knowledgeable and explain everything to where I could understand! Amazing experience! Thank you will always come here for any AC needs. Trustworthy and excellent customer service.

Celest G.
Verified Customer
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