Lennox 19J40 – FirstChoice 19J40, 40/7.5 MFD Dual Run Capacitor, 440 VAC, Round

Product overview
The Lennox 19J40 (FirstChoice 19J40) Dual Run Capacitor is designed to support reliable performance of residential and light commercial HVAC systems. This 40/7.5 MFD capacitor provides continuous, stable power to both the fan motor and compressor, helping the unit start smoothly and operate efficiently. Built for durability and consistent output, it is an ideal replacement for worn or weak capacitors that can cause system failures, hard starts, or reduced cooling performance.

This round 440 VAC capacitor is engineered for long service life and dependable electrical stability, making it a trusted choice for HVAC technicians and homeowners looking for a high-quality OEM-grade replacement part.

Key features
• Dual value: 40/7.5 microfarads (MFD)
• Voltage rating: 440 VAC
• Supports both compressor and fan motor
• Round aluminum housing for enhanced heat dissipation
• OEM-grade performance and durability
• Ideal for air conditioners and heat pumps requiring a 40/7.5 µF dual run capacitor

 Description
The Lennox 19J40 (FirstChoice 19J40) 40/7.5 MFD Dual Run Capacitor is a dependable replacement part for many Lennox air conditioners and heat pumps. Designed to deliver consistent electrical support, this 440-volt round capacitor powers both the compressor and fan motor for smooth startup and stable operation. Its durable construction helps prevent system breakdowns caused by weak capacitors, reducing downtime and extending the life of your HVAC equipment. If your cooling system is experiencing slow startup, reduced airflow, or intermittent performance, replacing the capacitor with the 19J40 can restore efficiency and reliability.

Dimensions (shipping)
Length: 3.0 in
Width: 3.0 in
Height: 5.0 in