OEM Carrier Single Run Capacitor P291-1503 for Model PF4MNA060000AAAA

This OEM single run capacitor (Carrier part number P291-1503) is the factory-specified replacement for the Carrier PF4MNA060000AAAA air handler/fan coil unit. A single run capacitor maintains the continuous electrical charge required to keep the blower motor or compressor running at peak efficiency. When this capacitor weakens or fails, the motor it supports can hum without starting, run sluggishly, draw excessive amperage, overheat, or trip the breaker — leaving you with no cooling or airflow.

• Specs: OEM-matched MFD (microfarad) rating | Factory-specified voltage (370V or 440V — confirm on unit data plate) | Single-section round case | ±5% factory tolerance for precision motor protection
• OEM vs Generic: This is a genuine Carrier OEM capacitor, built to exact factory tolerances. Generic alternatives often carry ±10% MFD variance, which accelerates motor winding stress and shortens equipment life — especially in high-duty-cycle fan coil applications.
• Install Difficulty: 2/5 — Always discharge the capacitor fully before handling any terminals (use a resistor or insulated discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance mode). Photograph all wiring connections prior to removal.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Engineered specifically for the Carrier PF4MNA060000AAAA fan coil unit. Always verify the MFD rating and voltage on your unit's data plate or existing capacitor before ordering to ensure an exact match. Have questions about fitment? Our HVAC parts specialists confirm compatibility before you buy — contact us before placing your order.