OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY3PPA036090AA

This is the genuine OEM Carrier/Totaline single run capacitor factory-specified for the Carrier PY3PPA036090AA packaged unit. The run capacitor stores and releases electrical charge to sustain the condenser fan motor during operation. When it degrades, you'll typically notice symptoms such as a humming or buzzing sound with no fan movement, the unit struggling to start, blowing warm air, or short-cycling on and off — all classic signs of a failed run capacitor that should be replaced promptly to prevent downstream motor damage.

• Specs: 4 MFD (microfarad) | 370V rated | Oval case | Metallized polypropylene film construction | ±5% factory tolerance | RoHS compliant | Replaces P291-0403, P291-1503
• OEM vs Generic: This OEM Totaline/Carrier capacitor is built to exact factory tolerances and is UL approved with a patented pressure-sensitive interrupter. Generic capacitors often run wider tolerances (±10%), which can increase motor current draw and shorten motor life over time.
• Install difficulty: 2/5 — Always discharge the capacitor before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (to verify capacitance before and after). Photograph all wiring before disconnecting. Turn off power at the disconnect box before starting.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Directly fits Carrier PY3PPA036090AA packaged units. OEM part numbers covered: P291-0403 (primary) and P291-1503 (superseded). Note: P291-1503 has been superseded — this listing covers the current replacement. Always verify the MFD and voltage rating on your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists are ready to confirm compatibility before you buy — contact us today and get your unit back up and running fast.