OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY2PPB030040NB

This factory-specified OEM single run capacitor is the correct replacement for the Carrier PY2PPB030040NB packaged or split-system unit. The run capacitor maintains the continuous phase shift needed to keep the fan motor spinning efficiently during normal operation. When this capacitor weakens or fails, you'll notice symptoms such as an audible hum with no motor movement, the system short-cycling within the first few minutes of operation, or the motor running hot and tripping the thermal overload. Left unaddressed, a failing run capacitor accelerates bearing wear and can lead to costly motor replacement.

• Specs: 4 MFD (microfarad) | 370V rated | Oval case form factor | ±5% factory tolerance | 50/60Hz compatible | RoHS compliant
• OEM vs Generic: This is a genuine Carrier/Totaline OEM capacitor — reliability tested to 60,000 service hours with 100% electrical testing at the factory. Generic capacitors often carry ±10% MFD tolerances, increasing motor stress and reducing service life.
• Install Difficulty: 1/5 — One of the easiest HVAC repairs. Always discharge the capacitor fully before handling any terminals. Tools needed: 1/4" nut driver, insulated needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before disconnecting.
• Warranty & Shipping: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Designed for use in Carrier model PY2PPB030040NB. Cross-references OEM part numbers P291-0403 and P291-1503, as well as Totaline HC90AA004, HC91CA004, and HC90AB004. Always verify the MFD rating and voltage on your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy.