OEM Carrier Single Run Capacitor 10 MFD 370V — P291-1003 for Model PG8MAA066110ACJA

This OEM single run capacitor (part number P291-1003) is the factory-specified replacement for the Carrier PG8MAA066110ACJA gas furnace. The run capacitor provides the sustained electrical charge that keeps the blower motor running at proper speed throughout every heating cycle. When it begins to fail, you'll notice symptoms such as the blower motor humming without spinning, sluggish startup, reduced airflow, or the motor shutting down shortly after ignition — leaving your home without heat. Replacing a worn capacitor promptly prevents costly secondary damage to the blower motor itself.

• Specs: 10 MFD (microfarad) | 370V rated | Oval case form factor | ±5% factory tolerance | 50/60 Hz | Rated -40°C to +70°C operating range
• OEM vs Generic: This OEM unit is manufactured to exact Carrier factory tolerances. Aftermarket capacitors commonly run at ±10% MFD variance, which accelerates motor winding stress and shortens blower motor life — costing far more in the long run.
• Install difficulty: 2/5 — Always discharge the capacitor before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections before disconnecting. The blower compartment is accessible via the lower furnace door panel.
• Warranty & Shipping: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Directly fits Carrier model PG8MAA066110ACJA gas furnace. Cross-references include HC91CA010D, HC91CA010, HC90AB010, HC96AC010, and 97F9002. Note: P291-1003 has been superseded — our listing supplies the direct OEM replacement at the same 10 MFD / 370V specification. Always verify the MFD and voltage rating on your unit's data plate before ordering. Have questions about fitment? Our HVAC parts team confirms compatibility before you buy.