OEM Carrier Dual Run & Start Capacitor Kit for Model PH11JA030000AAAA

This OEM capacitor kit includes both the dual run capacitor (P291-4573RS) and the start capacitor (P281-8806) factory-specified for the Carrier PH11JA030000AAAA heat pump system. The dual run capacitor continuously powers both the compressor and condenser fan motor during normal operation, while the start capacitor delivers the high-torque burst needed to get the compressor spinning on each cycle. When either fails, you'll notice classic symptoms: the unit hums but the compressor won't start, the system trips the breaker, or the outdoor unit short-cycles within the first few minutes of operation. Replacing both together is best practice — start capacitors often fail shortly after a run capacitor, and the labor cost is identical.

• Dual Run Capacitor Specs (P291-4573RS): 45+7.5 MFD (µF) | 370V rated | Round case | Compressor + condenser fan motor in one unit | Current successor: P291-4574RS
• Start Capacitor Specs (P281-8806): 88–108 MFD (µF) | 330V rated | Includes bleed resistor | Factory Totaline/Carrier spec
• OEM vs Generic: OEM capacitors are reliability-tested to 60,000 service hours per Carrier/United Technologies parameters using high-grade metallized polypropylene film. Generic units typically run ±10% MFD tolerance versus OEM precision, accelerating compressor wear and voiding manufacturer warranties.
• Install difficulty: 2/5 — Always discharge capacitors before touching any terminals (stored charge can be lethal). Tools needed: 1/4" nut driver, insulated needle-nose pliers, multimeter. Photograph all wiring connections before disconnecting. Verify MFD and voltage ratings against data plate before installation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Engineered as the OEM-specified capacitor kit for Carrier model PH11JA030000AAAA. Also cross-references Carrier Bryant Payne platforms using P291-4573RS / P291-4574RS (dual run) and P281-8806 (start). Always verify µF ratings and voltage on your unit's data plate before ordering. Our technical team is available to confirm fitment — contact us before you buy.