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This is the factory-specified OEM start capacitor (part number P281-8806) for the Carrier PH13NR024000AFAA heat pump. The start capacitor delivers the high-voltage electrical boost required to get the compressor spinning from a dead stop. Without a functioning start capacitor, the compressor will hum, trip on overload, or fail to start entirely — leaving you with a system that runs the fan but produces no cooling or heating. If your unit attempts to start and clicks off within seconds, or you hear a single low hum at startup, this capacitor is the most common culprit.
Compatibility: Engineered as a direct OEM replacement for the Carrier PH13NR024000AFAA heat pump. Always cross-reference the MFD and voltage rating on your unit's data plate before ordering to confirm fitment. Need help verifying? Our HVAC parts specialists confirm compatibility before every order — no guesswork.