OEM Carrier Single Run Capacitor 15 MFD 370V for Model PY2PNB042090NB

This OEM single run capacitor is the factory-specified replacement for the Carrier PY2PNB042090NB packaged unit. The run capacitor maintains a continuous phase-shifted current to keep the condenser fan motor or blower motor spinning at rated RPM after startup. When it degrades or fails, you'll notice symptoms such as a loud humming with no motor movement, a unit that trips off shortly after startup, or a fan that spins only when manually assisted. Left unaddressed, a weak capacitor will overheat and destroy the motor it serves — making prompt replacement critical.

• Specs: 15 MFD (microfarad) | 370V rated | Oval case form factor | Factory-matched ±5% tolerance | OEM part numbers P291-0403 and P291-1503 (superseded)
• OEM vs Generic: OEM capacitors are manufactured to Carrier's exact electrical tolerance specifications. Generic or off-brand units often ship with ±10% MFD variance, which accelerates motor bearing wear, increases amp draw, and significantly shortens compressor and fan motor service life.
• Install difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals. Recommended tools: 1/4" nut driver, needle-nose pliers, insulated screwdriver, and a multimeter to verify capacitance. Photograph all wiring connections before disconnecting the old unit.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PNB042090NB packaged unit. OEM part number P291-0403 is the primary reference; P291-1503 is an alternate/superseded OEM number for the same application. Always verify the MFD rating and voltage stamped on your existing capacitor's label before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.