OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY3PNA060115NA

This is the factory-specified OEM single run capacitor for the Carrier PY3PNA060115NA packaged or split-system unit. The run capacitor remains energized throughout the entire operating cycle, continuously supplying the phase-shifted current that allows the fan motor or compressor motor to run efficiently. When this capacitor weakens or fails, you'll notice symptoms like a loud hum with no motor movement, a condenser fan that spins only when manually assisted, warm air output despite the compressor running, or the unit short-cycling under load. Replacing it promptly prevents accelerated motor wear and compressor damage.

• Specs: 4 MFD (microfarad) ± 5% | 370 VAC rated | Oval case form factor | 50/60 Hz | Factory-matched Carrier OEM tolerance
• OEM vs Generic: This genuine Carrier / Totaline OEM capacitor is manufactured to exact MFD tolerance and subjected to 100% electrical testing before shipment. Generic aftermarket capacitors frequently ship at ±10% tolerance, which causes motors to draw excess current and shortens compressor life.
• Install difficulty: 2/5 — Shut off power at the disconnect and breaker. Allow 5 minutes for residual charge to dissipate before touching any terminals — capacitors store lethal voltage even after shutdown. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before removing the old capacitor.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Engineered as a direct OEM drop-in replacement for Carrier model PY3PNA060115NA. Also cross-references OEM part numbers P291-2503, HC90AA004, HC91CA004, and HC90AB004. Always verify the MFD rating and voltage on your unit's data plate or existing capacitor label before ordering. Have fitment questions? Our HVAC parts team confirms compatibility before you buy — contact us anytime.