OEM Carrier Dual Run Capacitor 40+5 MFD 440V for Model PH1PNA042000ABBA

This OEM dual run capacitor (part number P291-4054) is the factory-specified replacement for the Carrier PH1PNA042000ABBA split-system air conditioner. The dual run capacitor serves a critical role: it stores and delivers the electrical charge needed to start and sustain both the compressor and the condenser fan motor simultaneously — all within a single compact housing. When this capacitor weakens or fails, you'll typically notice a persistent hum with no motor movement, the system short-cycling within the first few minutes of operation, or the condenser fan spinning freely by hand but failing to self-start under power.

• Specs: 40+5 MFD (microfarad) | 440V rated | Oval case | ±6% factory tolerance | 50/60 Hz rated | UL recognized
• OEM vs Generic: This is a genuine Carrier OEM capacitor built to exact factory tolerances. Generic aftermarket capacitors commonly carry a looser ±10% MFD tolerance, which places additional strain on the compressor windings and fan motor bearings over time — accelerating wear and shortening system life.
• Install Difficulty: 2/5 — A straightforward DIY repair for anyone comfortable working around high-voltage components. Before touching any terminals, discharge the capacitor using an insulated resistor or discharge tool. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter for verification. Always photograph all wiring connections before disconnecting.
• Warranty: Backed by a 1-year OEM manufacturer's warranty. In-stock orders ship same business day from our warehouse — get your system cooling again fast.

Compatibility: Designed as the direct OEM replacement for the Carrier PH1PNA042000ABBA condensing unit. Always verify the MFD rating, voltage, and capacitor shape on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — just reach out.