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This is the genuine OEM Carrier start capacitor (part number P281-1766), factory-specified for the Carrier PH4ANG030000BBAA heat pump system. The start capacitor delivers the high-torque burst of electrical energy needed to bring the compressor up to operating speed. Without a functioning start capacitor, the compressor will attempt to start, hum, and then trip on thermal overload — leaving your system in a no-cooling or no-heating lockout condition. If your unit is short-cycling, buzzing at startup, or the compressor simply won't turn on, a failed start capacitor is one of the first components to test.
Compatibility: Designed for the Carrier PH4ANG030000BBAA heat pump. Always cross-reference the MFD range and voltage rating on your unit's data plate before ordering. Our technical team is available to verify fitment — contact us before you order if you have any questions. Order today and get same-day shipping on this in-stock OEM part.