Carrier P291-4554RS Run Capacitor

The Carrier P291-4554RS is a heavy-duty 45/5 MFD 440V dual run capacitor engineered for precision motor starting and continuous operation in residential and commercial HVACR systems. As a veteran-grade OEM replacement part, this round metal-case capacitor provides the specific 45 microfarad capacitance required for the compressor circuit and 5 microfarads for the condenser fan motor. This 440Vac round capacitor is a direct, drop-in successor for legacy models including P291-4553RS and HC98JA046, ensuring full compatibility with Carrier, Bryant, and Payne equipment.

Designed for professional-tier reliability, the P291-4554RS dual run capacitor features a robust internal construction with an 10,000 AFC (Available Fault Current) safety rating and non-PCB oil. The 370/440V dual voltage rating offers the versatility needed for various field applications, allowing technicians to stock a single unit that exceeds the requirements of 370V systems. Its round footprint and standard 2.5-inch diameter facilitate an easy fit in most existing mounting brackets, reducing downtime during emergency service calls.

• Direct OEM Replacement: Replaces P291-4553RS, HC98JA046, and HC98KA046 for seamless integration.
• High Voltage Versatility: Dual-rated for 370V and 440V applications, providing superior dielectric strength and electrical stability.
• Dual Function Circuitry: Simultaneously manages the start and run requirements for both the compressor (45 µF) and fan (5 µF).
• Durable Round Housing: Metal-cased design facilitates optimal heat dissipation and protection against harmonic vibration.
• Safety Certified: Built to meet or exceed original factory specifications with a 10,000 AFC protection level.

Can I use a 440V capacitor to replace a 370V unit?
Yes. You can always use a higher voltage rated capacitor as long as the microfarad (MFD) rating is an exact match. The 440V rating indicates the maximum voltage the part can handle, providing an extra safety margin compared to 370V versions.

What are the symptoms of a failing P291-4554RS?
Technicians should look for a "bulged" or swollen top, low MFD readings during a bench test, or a compressor that hums but fails to start. Replacing a weak capacitor is standard preventative maintenance to prevent motor winding damage.

Is the P291-4554RS compatible with other brands?
While this is a genuine Carrier component, it is compatible with any condenser unit requiring a 45+5 MFD rating and a round form factor, specifically models from Bryant and Payne.

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.