OEM Carrier Single Run Capacitor P291-1003 for Model PG8MAA048135AAJA

This OEM single run capacitor (part number P291-1003) is the factory-specified replacement for the Carrier PG8MAA048135AAJA gas furnace. The run capacitor maintains a continuous phase-shifted current to keep the blower motor running efficiently after start-up. When it degrades or fails, you'll notice symptoms such as the blower motor humming without spinning, the furnace cycling off on high-limit due to airflow loss, or the motor running sluggishly and overheating — all of which can cascade into costly motor replacement if left unaddressed.

• Specs: Single run capacitor | Factory OEM-matched MFD rating | 370V/440V rated | Designed to Carrier factory tolerances (±3% MFD) for the PG8MAA048135AAJA platform
• OEM vs Generic: This is a genuine OEM Carrier part — not an aftermarket substitute. Generic capacitors frequently ship at ±10% MFD tolerance, which accelerates motor winding wear and can void blower motor warranties. OEM ensures exact electrical characteristics every time.
• Install difficulty: 2/5 — Always discharge the capacitor fully before handling terminals. Tools needed: 1/4" nut driver, insulated needle-nose pliers, multimeter (capacitance mode). Photograph all wire connections before disconnecting. Power must be OFF at the breaker and the unit disconnect.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PG8MAA048135AAJA gas furnace. Always cross-reference the MFD and voltage rating printed on your existing capacitor's label or the unit's wiring diagram before installing. Our parts specialists are available to confirm fitment — reach out before ordering if you have any questions. Order today and get same-day shipping!