Lennox 80K47 Dual Run Capacitor 40+7.5 MFD 440 VAC Round

The Lennox 80K47 is a genuine OEM dual run capacitor designed as a direct replacement for Lennox and compatible HVAC systems. Rated at 40 + 7.5 MFD at 440 VAC, this round capacitor powers both the compressor (HERM) and the condenser fan motor circuits from a single unit, simplifying installation and reducing the need for two separate capacitors.

A dual run capacitor maintains the electrical charge necessary to keep the compressor and fan motor running efficiently after startup. A failed capacitor is one of the most common causes of air conditioner problems — including a system that hums but won't cool, a fan that won't spin, or a unit that short cycles and shuts down prematurely.

Key Specifications:

• Capacitance: 40 + 7.5 MFD (Microfarad)
• Voltage: 440 VAC
• Tolerance: +/- 5%
• Shape: Round
• Frequency: 50/60 Hz
• AFC (Ampere Fault Current): 10,000
• PCB Free: No PCBs
• Terminals: HERM, FAN, C (Common)
• Can Height: 4 inches (4.5 inches with terminals)
• Can Diameter: 2-7/16 inches
• Thermal Protection Class: 40/70/21

OEM & Cross-Reference Part Numbers:

• Lennox: 80K47, 80K4701, 52M57, 52M5701, 27H25, 27H2501, 12L28, 12L2801
• Allied / Armstrong / Concord / Ducane: R38514D007, R20394218, 20441818
• Other: 100335-46, E237947, 1405-100016, 1104-000658, 1504-300060

This genuine Lennox OEM replacement capacitor ensures the exact electrical characteristics required for proper system operation, helping to maintain published efficiency ratings, certifications, and reliable long-term performance.