OEM Carrier Dual Run Capacitor 40+5 MFD 440V for Model PY1PNB036060AAAA

This OEM dual run capacitor (P291-4054) is the factory-specified replacement for the Carrier PY1PNB036060AAAA packaged unit. The dual run capacitor stores and releases the electrical charge required to start and sustain both the compressor and the condenser fan motor simultaneously. When this capacitor fails, symptoms typically include a loud hum with no motor movement, the system short-cycling within minutes of startup, or a condenser fan that spins only when manually assisted. Left unaddressed, a weak or failed capacitor accelerates compressor wear and can lead to complete compressor failure.

• Specs: 40+5 MFD (microfarad) | 370/440V dual-rated | Round case | 50/60 Hz | Factory-matched ±5% tolerance | OEM part numbers: P291-4054 (primary dual run), P291-0403 & P291-1503 (single run variants)
• OEM vs Generic: This is a genuine Carrier OEM capacitor built to exact factory tolerances. Generic aftermarket capacitors often carry ±10% MFD deviation, which stresses motor windings over time and shortens compressor life. OEM means correct fit and specification every time.
• Install difficulty: 2/5 — Always discharge the capacitor fully before touching terminals (use an insulated resistor or discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting leads to ensure correct reinstallation.
• Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed specifically for the Carrier PY1PNB036060AAAA packaged unit. Always verify the MFD rating and voltage on your unit's data plate before ordering to confirm fitment. Our team is available to verify compatibility before you purchase — just reach out.