Trane SFCAP20D4440R Run Capacitor

The Trane SFCAP20D4440R Run Capacitor is a high-performance 20/4 MFD dual run capacitor designed for precise motor and compressor starting in high-efficiency HVAC systems. Rated for 440V AC, this OEM round run capacitor serves as an exact factory-authorized replacement for legacy part numbers CPT0658 and CPT0673. It is engineered to withstand the rigorous duty cycles of residential and commercial Trane air conditioners and heat pumps. By maintaining tight capacitance tolerances, this SFCAP20D4440R ensures electrical stability, preventing motor overheating and extending the operational life of the equipment. If you are troubleshooting a failed startup or hum in an exterior condenser unit, this Trane original part provides the specific uF rating and voltage suppression required by the manufacturer for safe and efficient power phase shifting.

• Direct OEM Replacement: Ensures electrical compatibility and correct physical fitment, replacing CPT0658 and CPT0673 without modifications.
• Dual Capacitance Rating: Features a 20+4 microfarad configuration to support both the fan motor and compressor circuits simultaneously.
• Industrial Build Quality: Constructed as a 440V round capacitor to handle high-temperature environments and voltage spikes better than lower-rated 370V alternatives.
• Reliable HVAC Performance: Maintains consistent torque for outdoor fan motors and compressors, optimizing system efficiency and reducing energy draw.

Can this 440V capacitor replace a 370V capacitor?
Yes, a 440V run capacitor like the SFCAP20D4440R can safely replace a 370V unit with the same MFD rating, as the higher voltage rating provides increased insulation overhead and durability.

What are the signs of a failing 20/4 MFD capacitor?
Common indicators include a bulging top casing, leaking oil, a compressor failing to start within seconds, or the outdoor fan motor spinning slowly or not at all despite receiving power.

Is the SFCAP20D4440R compatible with non-Trane systems?
While optimized for Trane and American Standard equipment, this capacitor can be used in any brand provided the 20/4 MFD rating and the round physical dimensions match the original component specifications.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.