OEM Carrier Dual Run Capacitor 45+5 MFD 440V for Model PY4GNAB42060AA

This is the genuine OEM dual run capacitor (part number P291-4554RS) factory-specified for the Carrier PY4GNAB42060AA split-system air conditioner. The dual run capacitor serves a critical role in your system — it simultaneously powers both the compressor and the condenser fan motor, providing the starting torque and continuous run support each needs to operate. When this capacitor begins to fail, common symptoms include an audible hum with no motor movement, the compressor short-cycling within minutes of startup, the condenser fan spinning sluggishly or not at all, or the entire outdoor unit failing to respond to a cooling call. Left unaddressed, a weak capacitor will stress the compressor and shorten its life significantly.

• Specs: 45+5 MFD (microfarad) | 440V rated | Round case | ±6% tolerance | 50/60 Hz | 10,000 AFC | Castor oil protected | No-PCB construction
• OEM vs Generic: This is a genuine Carrier OEM part built to exact factory specifications. Generic capacitors often carry a ±10% MFD tolerance vs. the OEM ±6%, which causes motor inefficiency, increased heat, and premature compressor wear over time.
• Install difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. If you are unsure, consult a licensed HVAC technician.
• Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Verified fit for Carrier model PY4GNAB42060AA. Also replaces legacy Carrier part numbers HC98KA046 and 319186-702. Confirm the MFD rating and voltage on your unit's data plate before ordering. Our team is happy to verify fitment — just reach out before you buy.