OEM Carrier Single Run Capacitor 5 MFD 370/440V for Model PG9MAB036060ACSA

This is the genuine OEM single run capacitor (part number P291-0503) factory-specified for the Carrier PG9MAB036060ACSA gas furnace. The single run capacitor provides the sustained electrical charge that keeps the indoor blower motor running at proper speed throughout every heating or cooling cycle. When this capacitor weakens or fails, you may notice the blower motor humming without spinning, sluggish airflow, intermittent short-cycling, or a complete no-start condition on the indoor blower — all symptoms that point directly to capacitor failure before suspecting the motor itself.

• Specs: 5 MFD (microfarad) | 370/440V dual-rated | Oval case form factor | 50/60 Hz | ±6% factory tolerance | Replaces P2910503, 97F5705, HC91CA005
• OEM vs Generic: This genuine Carrier/Totaline OEM capacitor is built to exact factory MFD tolerance. Aftermarket capacitors often drift beyond ±10% MFD, placing increased thermal stress on the blower motor windings and shortening motor life significantly over repeated cycles.
• Install Difficulty: 2/5 — Always discharge the capacitor fully before touching terminals (use an insulated resistor or discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter with capacitance setting. Photograph all wiring connections before disconnecting. Power must be OFF at the disconnect and breaker.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for the Carrier PG9MAB036060ACSA gas furnace indoor blower circuit. Always verify the MFD rating and voltage on your unit's data plate before ordering — the voltage rating on the replacement must be equal to or greater than the original. Note: P291-0503 has been superseded by P291-0504; both are compatible. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us before purchasing.