Copeland 914-0037-39 Run Capacitor

As a seasoned tech, you know that a failing run capacitor is one of the most common calls in the field. The Copeland 914-0037-39 is a professional-grade 55 MFD 370VAC round single-run capacitor engineered specifically for high-torque HVACR compressors and motor applications. Built to withstand the rigorous demands of industrial and residential cooling systems, this non-PCB oil-filled component ensures your single-phase induction motors maintain a proper power factor and consistent running torque. The metallized polypropylene film construction provides low dissipation and stable thermal performance, even during peak summer surges. When you are replacing an OEM part on a Copeland condensing unit or similar machinery, using a 370 volt capacitor like the 914-0037-39 provides the exact electrical characteristics required to protect the compressor windings from premature wear and efficiency loss.

Key Benefits

• Optimized Motor Torque: Maintains the necessary phase shift to keep HVAC compressors running at peak efficiency.
• Industrial-Grade Build: Features a round, oil-filled aluminum housing designed for superior heat dissipation in demanding environments.
• Standardized Terminals: Equipped with 1/4-inch quick-connect terminals for fast, secure field wiring.
• Reliable Starting Support: Reduces amperage draw during the motor's run cycle, preventing nuisance trips and overheating.
• Universal HVAC Compatibility: A direct replacement for many 55 microfarad 370vac standard round capacitors across multiple brands.

Common Questions

Can I use a 440V capacitor to replace this 370V model?
Yes. In the field, you can always uprate the voltage (e.g., using a 440VAC capacitor in place of a 370VAC), but never downrate it. The 914-0037-39 is rated for 370V, which covers most standard residential applications.

What are the signs that this 55 MFD capacitor has failed?
Look for a "hard start" where the compressor hums but won't turn over, a bulging top on the capacitor can, or a capacitance reading on your multimeter that has drifted more than 6-10% from the 55 MFD rating.

Is this a dual-run or single-run capacitor?
This is a single-run capacitor. It is designed to support one motor (typically the compressor). If your system requires a separate fan circuit on the same capacitor, you would need a dual-run model with three terminals (Herm, Fan, and C).

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.