OEM Carrier Single Run Capacitor 4 MFD / 10 MFD 370V for Model PY1REA072074ACWA

This OEM Carrier (Totaline) single run capacitor is the factory-specified replacement for the Carrier PY1REA072074ACWA system, covering both the P291-0403 (4 MFD) and P291-1003 (10 MFD) variants. A run capacitor stores and releases the precise electrical charge needed to keep a single-phase motor spinning at full efficiency. When it degrades, you'll notice symptoms such as a humming motor that fails to start, intermittent short-cycling, unusually high energy consumption, or a motor that runs hot and trips on thermal overload. Note: P291-0403 is superseded by P291-0404, and P291-1003 is superseded by P291-1004 — all variants are covered under this listing.

• Specs: P291-0403 — 4 MFD ±5% | 370V AC | Oval case | 50/60 Hz | P291-1003 — 10 MFD ±5% | 370V AC | Oval case | 50/60 Hz | Both rated -40°C to +70°C operating temperature
• OEM vs Generic: These Totaline/Carrier OEM capacitors are factory-tested to 60,000 service hours and subjected to 100% electrical testing including capacitance and high-potential withstand checks. Generic alternatives often skip full electrical screening and carry looser ±10% MFD tolerances, accelerating motor wear over time.
• Install difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before disconnecting. Match MFD and voltage ratings exactly to your unit's data plate — do not substitute a different MFD value.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model PY1REA072074ACWA. Always verify the MFD rating and voltage on your unit's data plate before ordering — the 4 MFD (P291-0403/P291-0404) and 10 MFD (P291-1003/P291-1004) serve different motor circuits. Questions about fitment? Our HVAC parts team confirms compatibility before you buy — order with confidence and get it shipped today.