OEM Carrier Single Run Capacitor P291-1503 for Model FB4ANB060020ACAA

This is the factory-specified OEM single run capacitor (part number P291-1503) for the Carrier FB4ANB060020ACAA air handler. The run capacitor provides the continuous phase-shifted current the blower motor needs to maintain efficient rotation after startup. When this capacitor fails, the blower motor may hum loudly without spinning, run sluggishly, draw excess amperage, or cause the unit to trip on thermal overload — all signs it's time for a direct OEM replacement.

• Specs: Single run capacitor | Factory-matched MFD rating | 370V or 440V rated (verify on data plate) | Oval or round case | Manufactured to OEM ±5% tolerance for precise motor performance
• OEM vs Generic: This is a genuine OEM Carrier capacitor manufactured to exact factory specifications. Generic alternatives often carry a ±10% MFD tolerance, which causes increased motor heat, reduced efficiency, and significantly shortened motor and compressor lifespan over time.
• Install Difficulty: 2/5 — A straightforward swap for a qualified technician or experienced DIYer. Required tools: 1/4" nut driver, insulated needle-nose pliers, and a multimeter. Always discharge the capacitor fully before handling — stored voltage can cause serious injury. Photograph all wiring connections before disconnecting terminals.
• Warranty: Backed by a 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our stocked warehouse.

Compatibility: Designed for the Carrier FB4ANB060020ACAA air handler (5-ton, multi-speed blower). Always cross-reference the MFD rating and voltage printed on your original capacitor's label or the unit's data plate before ordering to confirm fitment. If you have any questions about compatibility, our HVAC parts specialists are available to verify the correct part for your specific unit before you order — no guesswork required.