OEM Carrier Single Run Capacitor Set (4 MFD & 15 MFD 370V) for Model PY3PPA036060AA

This factory-matched OEM single run capacitor set includes both the P291-0403 (4 MFD 370V) and P291-1503 (15 MFD 370V) oval capacitors — the two Carrier-specified single run capacitors for the PY3PPA036060AA packaged heat pump unit. Unlike a dual-run capacitor, this unit uses two discrete oval single run capacitors: one dedicated to the condenser fan motor and one to the compressor. Each capacitor stores and releases the electrical charge required to start and sustain its respective motor during every heating and cooling cycle. When one fails, you'll typically hear a persistent hum with no motor movement, notice the system short-cycling, or find the unit not cooling or heating at all.

• Specs — P291-0403: 4 MFD (microfarad) | 370 VAC | Oval case | 50/60 Hz | Single run | Factory ±5% tolerance
• Specs — P291-1503: 15 MFD (microfarad) | 370 VAC | Oval case | 50/60 Hz | Single run | Factory ±5% tolerance
• OEM vs Generic: OEM Carrier/Totaline capacitors are manufactured to exact factory tolerances and subjected to 100% electrical testing. Generic capacitors often run wider tolerance bands, accelerating motor wear and increasing compressor strain over time.
• Install difficulty: 2/5 — Always shut off power at the disconnect and allow 5 minutes for capacitors to self-discharge before handling. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance setting). Photograph all wiring connections before removal. Replace one capacitor at a time to avoid wiring errors.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY3PPA036060AA packaged heat pump units. Always verify MFD and voltage ratings against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.