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This is the factory-specified OEM dual run capacitor (part number P291-5554RS) for the Carrier HA1AJX060000AAAA split-system air conditioner. The dual run capacitor serves a critical role in your system — it stores and releases electrical energy to start and sustain both the compressor and the condenser fan motor simultaneously. When this component begins to fail, you may notice a loud humming with no motor startup, intermittent short-cycling, a condenser fan that spins only when manually nudged, or a compressor that trips the breaker under load. Left unaddressed, a weak capacitor accelerates wear on both the compressor and fan motor, leading to far more expensive repairs.
Compatibility: Engineered specifically for the Carrier HA1AJX060000AAAA 5-ton split-system condenser. Before ordering, confirm the MFD and voltage ratings on your unit's data plate match part number P291-5554RS. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions. Order now and get same-day shipping on in-stock parts.