OEM Carrier Dual Run & Start Capacitor Kit (P291-4054RS + P281-8806) for Model PH10JA042000ACAA

This OEM-matched capacitor kit contains both the dual run capacitor (P291-4054RS) and start capacitor (P281-8806) — the two factory-specified capacitors for the Carrier PH10JA042000ACAA packaged heat pump unit. The dual run capacitor sustains the compressor and condenser fan motor during normal operation, while the start capacitor delivers the high-torque burst of current needed to cycle the compressor on. When either fails, symptoms range from a humming compressor that won't start, to a unit that trips on thermal overload, to complete no-cooling/no-heating lockout. Replacing both at the same time is best practice — start capacitors rarely fail alone, and dual run capacitors on the same unit are typically the same age.

• Dual Run Capacitor Specs (P291-4054RS): 40+5 MFD | 440V | Round case | ±6% tolerance | 50/60 Hz | AFC 10,000 | Castor Oil protected | No PCB
• Start Capacitor Specs (P281-8806): 88–108 MFD | 330V | With bleed resistor | 2.06" diameter × 4.37" height | Factory-matched OEM Totaline/Carrier spec
• OEM vs Generic: OEM capacitors are built to exact Carrier factory tolerances. Generic alternatives often carry a wider ±10% MFD variance, which accelerates compressor wear, shortens motor life, and can void equipment warranties. Note: Carrier sources capacitors from sub-manufacturers (e.g., Totaline/BMI); the label will reflect the sub-manufacturer's name — this is normal and correct.
• Install Difficulty: 2/5 — Always discharge capacitors before handling. Tools: 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. The start capacitor includes a bleed resistor — ensure it is properly reconnected on installation.
• Warranty: 1-year OEM manufacturer warranty. In-stock kit ships same business day from our warehouse when ordered by cutoff.

Compatibility: Engineered as the OEM replacement capacitor pair for Carrier PH10JA042000ACAA packaged heat pump units. Always verify MFD, voltage ratings, and terminal configuration against your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — ships today.