OEM Carrier Single Run Capacitor P291-1503 for Model PF1MNC036008AAAA

This is the genuine OEM single run capacitor for the Carrier PF1MNC036008AAAA air handler/fan coil unit, sold under OEM part number P291-1503. A single run capacitor maintains the steady electrical charge required to keep either the compressor or the condenser fan motor spinning during normal operation. Unlike a dual run capacitor, a single run unit is dedicated to one motor — making an exact MFD and voltage match absolutely critical for reliable, long-term performance. Common failure symptoms include the motor humming but failing to start, the system tripping on high-pressure lockout, or a burning smell coming from the unit.

• OEM Part Number: P291-1503 | Single Run Capacitor | Factory-specified replacement for Carrier model PF1MNC036008AAAA | ±5% MFD tolerance or tighter as factory-rated
• OEM vs. Generic: This is a genuine Carrier OEM capacitor — factory-tested to exact tolerances. Aftermarket alternatives frequently deviate ±10–15% MFD, increasing motor start stress, accelerating winding wear, and voiding equipment warranties.
• Install Difficulty: 2/5 — Always discharge the capacitor fully before handling (use a 20,000 Ω resistor or insulated discharge tool). Tools needed: 1/4" nut driver, needle-nose pliers, insulated multimeter. Photograph all wiring connections before disconnecting the old unit.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our fulfillment warehouse.

Compatibility: Engineered specifically for the Carrier PF1MNC036008AAAA fan coil unit. Before ordering, confirm the MFD rating and voltage stamped on your existing capacitor's label or your unit's data plate — single run capacitors must match these values exactly. Not sure if this is the right part? Contact our HVAC parts specialists for free fitment verification before you buy.