OEM Carrier Single Run Capacitor 15 MFD 370V for Model PF4MNA048T00AAAA

This OEM single run capacitor (part number P291-1503) is the factory-specified replacement for the Carrier PF4MNA048T00AAAA air handler and fan coil system. The run capacitor maintains the continuous phase-shifted current that keeps the blower or condenser fan motor spinning at rated speed. When this capacitor weakens or fails, you'll notice symptoms such as a loud humming sound with no motor movement, sluggish or intermittent fan startup, overheating motor housings, or a system that trips its thermal overload repeatedly. Replacing a failing run capacitor promptly protects the motor windings from burnout — a far more expensive repair.

• Specs: 15 MFD (microfarad) | 370V rated | Oval case form factor | ±5% factory tolerance | 50/60 Hz | Non-PCB dielectric fluid | UL-approved current interrupter
• OEM vs Generic: This is a genuine Carrier/Totaline OEM capacitor built to exact factory tolerances. Generic aftermarket capacitors often run ±10% MFD deviation, which stresses motor windings over time and accelerates failure. OEM spec ensures proper motor torque and longevity.
• Install Difficulty: 2/5 — Capacitors store a lethal charge even after power is disconnected. Always discharge the capacitor using an insulated resistor tool before touching terminals. Tools needed: flathead screwdriver, needle-nose pliers, insulated discharge tool, multimeter (to verify MFD before and after). Photograph all wiring connections before removal.
• Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse — order by 3 PM local time for guaranteed same-day dispatch.

Compatibility: Engineered as the direct OEM replacement for Carrier model PF4MNA048T00AAAA. Always verify the MFD rating and voltage stamped on your existing capacitor's label before ordering. Note that Carrier sources capacitors from multiple approved manufacturers (including Totaline/Genteq); the brand printed on the capacitor body may differ from Carrier, but the specifications and fitment are factory-matched. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.