OEM Carrier Single Run Capacitor for Model PY1PPB048115NBAA

This is the factory-specified OEM single run capacitor for the Carrier PY1PPB048115NBAA packaged unit. A single run capacitor maintains the continuous phase shift needed to keep the condenser fan motor or compressor running efficiently after startup. When this capacitor weakens or fails, common symptoms include a loud hum at startup with no motor movement, intermittent short-cycling, increased energy consumption, or a complete failure to cool. Replacing it promptly prevents downstream damage to the compressor and fan motor — two of the most expensive components in any packaged system.

• OEM Part Numbers: P291-0403 (primary) | P291-1503 (alternate/superseded) — both are factory-authorized replacements for this unit. Verify your existing capacitor's MFD and voltage ratings against your unit's data plate before installation.
• OEM vs Generic: OEM Carrier capacitors are manufactured to exact factory tolerances (±3% MFD), ensuring proper motor protection and longevity. Generic alternatives often carry ±10% tolerance, which can accelerate motor winding wear and shorten compressor life significantly.
• Install Difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals (use a 20,000-ohm resistor or insulated screwdriver across terminals). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter with capacitance setting. Photograph all wiring connections before disconnecting.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed for the Carrier PY1PPB048115NBAA packaged unit. Always confirm the MFD rating and voltage stamped on your existing capacitor match this part. Not sure? Contact our technical team — we verify fitment before you order so you never receive the wrong part.