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This is the factory-specified OEM single run capacitor (part number P291-1503) for the Carrier FA4ANC048010AFAA air handler. The run capacitor provides a continuous phase-shifted charge to keep the blower motor running at full efficiency once it has started. When this component fails, the blower motor may hum loudly without spinning, start slowly and overheat, or cause the system to short-cycle — leaving your home without proper airflow and putting strain on the entire HVAC system.
Compatibility: Designed specifically for the Carrier FA4ANC048010AFAA 4-ton air handler. Always cross-reference the MFD and voltage rating on your unit's data plate or existing capacitor before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you buy — no guesswork required.