OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY2PNB048130AB

This is the factory-specified OEM single run capacitor for the Carrier PY2PNB048130AB packaged gas/electric unit. The run capacitor stays in the motor circuit continuously during operation, storing and releasing electrical energy to keep the condenser fan motor spinning efficiently. When it fails, symptoms range from a buzzing or humming noise with no motor movement, to a fan that starts slowly and shuts the unit down on thermal overload, to a complete no-cooling condition. Replacing it promptly protects the motor from burnout caused by running without proper capacitance.

• Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case | OEM part numbers: P291-0403 (primary), P291-1503 (alternate/superseded) | Replaces legacy P/N 97F5704 | Factory ±5% tolerance
• OEM vs Generic: This is a genuine Carrier OEM capacitor built to exact factory tolerances. Generic aftermarket capacitors often carry a wide ±10% MFD variance, which can accelerate motor winding wear and shorten equipment life — particularly important for packaged rooftop and ground-set units exposed to high ambient temperatures.
• Install difficulty: 2/5 — Always shut off power at the disconnect and wait 5 minutes for residual charge to dissipate before touching terminals. Tools needed: flathead screwdriver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring terminals before disconnecting leads. The oval case mounts with a single bracket screw in the control compartment.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock at NationalHVACParts.com — ships same business day when ordered before cutoff. Arrives in protective anti-static packaging to prevent transit damage.

Compatibility: Confirmed fit for Carrier model PY2PNB048130AB packaged gas/electric unit (4-ton, 130 MBH heat). Always verify the MFD rating and voltage on your unit's capacitor data label or wiring diagram before ordering. If you need help confirming fitment for a related Bryant or Payne packaged unit variant, our parts team verifies compatibility before you buy.