OEM Carrier Dual Run Capacitor 45+5 MFD 370V for Model PH3PNA030000AA

This OEM dual run capacitor (part# P291-4553RS) is the factory-specified replacement for the Carrier PH3PNA030000AA split-system air conditioner. The dual run capacitor stores and releases the electrical charge needed to start and sustain both the compressor and the condenser fan motor simultaneously. When this component fails, you'll typically notice a telltale hum from the outdoor unit with neither motor starting, the system tripping the breaker, or intermittent short-cycling before shutdown. A quick multimeter test across the terminals will confirm a capacitor out of tolerance — and this direct OEM replacement restores factory operation immediately.

• Specs: 45+5 MFD (microfarad) | 370V rated | Round round-style case | ±5% factory tolerance | Non-PCB dielectric fluid | UL-approved current interrupter | Multiple electrical terminals | Part numbers: P291-4553RS (primary), P291-1503 (single run companion)
• OEM vs Generic: OEM capacitors are wound and sealed to Carrier's exact factory specification, maintaining tight ±5% MFD tolerance. Generic alternatives often run ±10% or wider, placing undue electrical stress on the compressor windings and condenser fan motor bearings, accelerating wear and shortening system life.
• Install Difficulty: 2/5 — Always discharge the capacitor before touching any terminals (use an insulated screwdriver across terminals). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before removal. Swap wire-for-wire to the new unit. Total job time: 15–20 minutes for a capable DIYer.
• Warranty: 1-year OEM factory warranty coverage. In stock and ships same business day from our warehouse — get your system cooling again fast.

Compatibility: Engineered as a direct OEM fit for Carrier model PH3PNA030000AA. Also cross-references part numbers HC98JA046, HC93CZ040, HC98CA046, P291-4553R, and P291-4554RS (current successor). Always verify the MFD rating and voltage stamped on your unit's original capacitor data label before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you order — reach out before you buy.