OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY2PPB042060AB

This is the factory OEM single run capacitor for Carrier model PY2PPB042060AB, supplied under Carrier/Totaline part numbers P291-0403 and P291-1503. The run capacitor provides a continuous phase-shifted current to keep the fan motor or compressor running smoothly after start-up. When it degrades or fails, symptoms include a humming motor that won't spin, intermittent cycling, or a system that trips on thermal overload due to the motor drawing excessive amperage without proper capacitive support.

• Specs: 4 MFD (microfarad) | 370 VAC | Oval case | Metallized polypropylene film construction | ±5% capacitance tolerance | 50/60 Hz rated | RoHS compliant
• OEM vs Generic: This OEM Carrier/Totaline unit is subjected to 100% electrical testing at the factory and features a UL-approved patented pressure-sensitive interrupter for safe failure. Generic aftermarket capacitors often skip individual unit testing and use lower-grade dielectric film, leading to premature failure and potential motor damage.
• Install difficulty: 2/5 — Always discharge the old capacitor before handling (use an insulated screwdriver across terminals). Tools needed: flathead screwdriver, needle-nose pliers, multimeter (capacitance mode). Photograph wiring orientation before removal. Match MFD and voltage exactly — never substitute a higher MFD rating on a run capacitor.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement for Carrier PY2PPB042060AB. Also cross-references Carrier/Totaline part numbers P291-1503, HC90AA004, HC91CA004, and HC90AB004. Verify the 4 MFD and 370V ratings against your unit's data plate before ordering. Not sure it fits? Our HVAC parts team verifies fitment before you buy — contact us today and ship the same day.