OEM Carrier Single Run Capacitor 10 MFD 370V for Model PG8MAA066135ACJA

This OEM single run capacitor (part number P291-1003) is the factory-specified replacement for the Carrier PG8MAA066135ACJA gas furnace. The run capacitor provides a continuous phase-shifted current to the blower motor's auxiliary winding, keeping it spinning efficiently throughout every heating and cooling cycle. When the capacitor weakens or fails, common symptoms include a furnace blower motor that hums but won't start, runs slower than normal, draws excess current, or trips a thermal overload — ultimately leading to reduced airflow, comfort complaints, and potential motor burnout if left unaddressed.

• Specs: 10 MFD (microfarad) | 370V rated (370/440V compatible) | Oval case | ±5% capacitance tolerance | 50/60 Hz | 10,000 AFC protected | Non-PCB dielectric fluid | RoHS Compliant
• OEM vs Generic: This is a genuine Carrier Totaline-series capacitor manufactured to factory tolerance. Generic aftermarket capacitors often carry a ±10% MFD tolerance, which accelerates motor winding stress, shortens blower motor life, and may void your equipment warranty.
• Install difficulty: 2/5 — Before touching any terminals, discharge the capacitor safely using a resistor or an insulated screwdriver. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter with capacitance function. Always photograph the existing wiring before disconnecting terminals. The oval case mounts via a standard snap-in or strap bracket inside the blower compartment.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8MAA066135ACJA gas furnace blower motor circuit. Note: P291-1003 has been superseded by P291-1004 (440V-rated upgrade); both MFD ratings are identical and the upgraded voltage rating is a direct, compatible replacement. Always verify the MFD value on your original capacitor's label before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — order now and receive same-day shipping.