OEM Carrier Single Run Capacitor 15 MFD 370V for Model PH2PPB042000AA

This is the factory-specified OEM single run capacitor for the Carrier PH2PPB042000AA heat pump system, carrying OEM part number P291-1503 (superseded by P291-1504). The run capacitor provides the continuous phase-shifted current required to keep the compressor motor running efficiently after start-up. When this capacitor degrades or fails, you'll typically experience symptoms such as a humming condenser with no compressor start, intermittent hard-starting, increased amp draw, or a complete no-cool condition as the compressor trips on thermal overload.

• Specs: 15 MFD (microfarad) | 370V rated | Oval case form factor | ±5% factory tolerance | OEM part# P291-1503 / P291-1504
• OEM vs Generic: This OEM Carrier capacitor is manufactured to exact factory tolerances, ensuring proper compressor motor protection and longevity. Generic capacitors often carry a wider ±10% MFD tolerance, which can accelerate motor wear, reduce efficiency, and shorten compressor life.
• Install Difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals (use an insulated resistor or discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify MFD before installation). Photograph all wiring connections before disconnecting the old unit.
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Designed as the direct OEM replacement for Carrier model PH2PPB042000AA heat pump systems. Always verify the MFD rating and voltage specification on your unit's data plate before ordering. Note that P291-1503 has been superseded by P291-1504 (upgraded to 440V) — both are fully compatible replacements. Our fitment team is available to confirm compatibility before you order.