OEM Payne Run Capacitor for PA4ZNA042000AA Condenser

The run capacitor is the small cylindrical can that gives your Payne PA4ZNA042000AA's compressor and condenser fan motor the steady phase-shifted current they need to keep running. It's typically a dual-run capacitor serving both the compressor (HERM) and fan (FAN) from one component. When it fails, the warning signs are hard to miss: the condenser fan won't spin or only starts with a manual push, the compressor hums and grunts but won't engage, the breaker trips on startup, the system short-cycles, vents blow warm air, and electric bills climb as the motors pull high amperage. A swollen or oily-topped can confirms the diagnosis. Capacitors are rated by microfarads (MFD/µF) and voltage — usually 370V or 440V, often a dual rating such as 40+5 MFD. The OEM part maintains a tight ±5% tolerance at exactly the MFD and voltage Payne engineered for this unit. Match your existing can's values precisely; you may go up in voltage rating but never down, and the MFD must match. Why OEM? Budget aftermarket capacitors frequently spec a wide ±10–15% tolerance and use thinner dielectric film that drifts under heat. An out-of-tolerance cap feeds the motors incorrect current, overheating and stressing the compressor windings, cutting motor lifespan, and causing repeat no-cool failures. The OEM unit holds its rated capacitance reliably through brutal summer load. Install difficulty: 2 of 5. Tools: 1/4" nut driver, insulated needle-nose pliers, and a multimeter that reads capacitance. SAFETY: a charged run capacitor can deliver a dangerous shock — ALWAYS discharge it across its terminals with an insulated tool and shut off the disconnect before handling. Ships same business day from our stocked warehouse on orders before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Payne model PA4ZNA042000AA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.

Shipping & Returns

Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.