Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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The OEM Carrier run capacitor (P291-3543) supplies the steady electrical phase shift that keeps your Carrier GB1AAV048135AGJA furnace blower motor running smoothly and efficiently. A weak or failed capacitor causes hard starting, a humming motor that won't spin, overheating, or a blower that quits mid-cycle — and a capacitor is one of the most common HVAC failure points. This genuine OEM capacitor is matched to the exact microfarad and voltage rating required by the GB1AAV048135AGJA motor, protecting it from premature burnout that an incorrectly rated generic part can cause. Installation is easy for confident DIYers: disconnect power, discharge the old capacitor safely with an insulated screwdriver across the terminals, note the wire positions, swap in the replacement, and reconnect — about 15 minutes. Always verify the rating matches before powering up. Restoring proper capacitance brings your blower back to full, quiet performance and extends motor life. In stock and ships same-day when you order before 3PM CST, with most orders delivered in 2 to 4 business days.
This part is compatible with Carrier model GB1AAV048135AGJA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.