Rheem-Ruud 43-25133-35 Run Capacitor

The Rheem-Ruud 43-25133-35 is a professional-grade 35/5 MFD 370V dual run capacitor designed for high-performance HVAC systems. This round motor run capacitor provides the necessary phase shift to optimize the torque and efficiency of both the compressor and the condenser fan motor. Built to withstand demanding thermal environments, this 370 VAC dual capacitor features a non-PCB oil-filled design and a rugged aluminum housing for superior heat dissipation. It serves as a direct OEM replacement for various Rheem, Ruud, and WeatherKing units, ensuring precise electrical tolerances required for PSC motor starting and continuous operation. Field technicians rely on this dual section capacitor for its high-reliability rating and 10,000 AFC internal pressure switch protection. When performing a capacitor bench test or field replacement, ensure the microfarad ratings and voltage limits align with the HVAC motor nameplate to prevent winding overheating or premature component failure.

• Universal Application: Standard 370-volt rating is suitable for replacing lower voltage capacitors in the same microfarad range.
• High Thermal Stability: Engineered to operate reliably in high-ambient temperature environments common in outdoor condensing units.
• OEM Compatibility: Precision-matched for Rheem HVAC replacement parts, maintaining the original equipment’s performance curve.
• Safety Rated: Features a pressure-sensitive interrupter to safely disconnect the circuit if internal pressure builds.
• Compact Form Factor: Standardized round diameter allows for easy installation within tight electrical control boxes.

Common Contractor Questions

Can I use a 440V capacitor to replace this 370V model?
Yes. While you must never use a lower voltage capacitor, a 440V unit can safely replace a 370V model provided the 35/5 microfarad ratings are identical.

What indicates a failed run capacitor during a service call?
Technicians should look for physical signs like "bloating" or top-bulging, or use a multimeter to check if the capacitance has drifted more than 5% to 10% from the 35/5 MFD rating.

Is the 43-25133-35 compatible with multi-stage compressors?
This capacitor is specifically sized for systems requiring a 35 MFD hermetic side and a 5 MFD fan side. Always verify the individual motor requirements on the unit’s data plate before installation.

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.