OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY2PEB060090AB

This is the genuine OEM factory-specified single run capacitor for the Carrier PY2PEB060090AB packaged unit. The run capacitor remains in the circuit continuously during compressor and fan motor operation, stabilizing voltage and ensuring efficient, sustained motor performance. When this capacitor weakens or fails, symptoms include a loud humming or buzzing at startup with no motor movement, a fan motor that spins sluggishly or not at all, or a unit that short-cycles and trips on thermal overload. Don't let a failed $15 part take down your entire system — this is one of the most common and straightforward fixes in HVAC service.

• Specs: 4 MFD (microfarad) | 370 VAC | Oval case | ±5% capacitance tolerance | 50/60 Hz | Part Numbers: P291-0403, P291-1003, P291-2503
• OEM vs Generic: This is a genuine Carrier / Totaline OEM capacitor, tested to 60,000 service hours with 100% electrical testing at the factory. Generic capacitors often carry ±10% MFD tolerance, which accelerates motor winding stress and shortens compressor life — especially critical in a packaged unit where heat buildup is concentrated.
• Install difficulty: 2/5 — Discharge the capacitor fully before touching any terminals (use a 20kΩ resistor or insulated screwdriver). Tools needed: ¼" nut driver, needle-nose pliers, multimeter (capacitance mode). Always photograph existing wiring before disconnecting terminals. Power must be locked out at the disconnect before beginning.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct factory replacement for Carrier model PY2PEB060090AB. Cross-references and supersedes part numbers P291-0403, P291-1003, P291-2503, 97F5704, HC90AA004, HC91CA004, and HC90AB004. Always verify the MFD rating and voltage on your unit's data plate before ordering — voltage rating must match or exceed the original. Questions about fitment? Our HVAC parts specialists verify compatibility before you order. Order by 5 PM and it ships today.