OEM Carrier Single Run Capacitor Kit 4 MFD & 15 MFD 370V for Model PY3PEA036090NA

This OEM-matched single run capacitor kit contains both factory-specified capacitors for the Carrier PY3PEA036090NA packaged unit: the P291-0403 (4 MFD 370V oval) for the condenser fan motor and the P291-1503 (15 MFD 370V oval) for the compressor circuit. Run capacitors provide the continuous phase-shifted current that keeps motors running efficiently after startup. When either capacitor weakens or fails, you may notice the compressor or fan motor humming but not spinning, the unit short-cycling within minutes of startup, higher-than-normal energy consumption, or complete failure to cool. Replacing both at the same service call is best practice — a weakened companion capacitor dramatically shortens the life of a new one.

• Specs — P291-0403: 4 MFD (microfarad) | 370V | Oval case | Carrier Totaline factory part | ±5% capacitance tolerance | RoHS compliant
• Specs — P291-1503: 15 MFD (microfarad) | 370V | Oval case | Carrier Totaline factory part | UL approved with patented pressure-sensitive interrupter | Proven to 60,000 service hours
• OEM vs Generic: Carrier Totaline OEM capacitors are 100% electrically tested at the factory and built to United Technologies reliability standards. Generic capacitors often carry ±10% MFD tolerances, increasing motor stress and accelerating wear on compressor windings and fan bearings.
• Install difficulty: 2/5 — Discharge both capacitors fully before handling (use a 20kΩ resistor or insulated screwdriver across terminals). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Always photograph existing wiring before disconnecting. Match the MFD and voltage on your unit's data plate before installation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PY3PEA036090NA packaged gas/electric unit. Verify both MFD ratings and voltage on the unit's data plate before ordering. Note: P291-1503 has been superseded by P291-1504 (440V upgrade) — both are compatible. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — reach out before checkout.