OEM Carrier Single Run Capacitor 4 MFD 370V for Model PY1REA060074AAWB

This is the factory-specified OEM single run capacitor for the Carrier PY1REA060074AAWB packaged unit. The run capacitor provides a continuous phase-shifted current to keep the condenser fan motor or blower motor running at full torque and efficiency. When this capacitor fails, you'll typically notice the motor humming but failing to spin, intermittent shutdowns, reduced airflow, or the unit tripping on high-pressure lockout due to an overworked compressor. Left unaddressed, a weak or failed run capacitor can cause permanent motor winding damage.

• Specs: 4 MFD (microfarad) | 370 VAC rated | Oval case | Single (non-dual) run capacitor | Carrier OEM part number P291-0403 | Cross-references: HC90AA004, HC91CA004, HC90AB004, 97F5704, C304L, 27L571
• OEM vs Generic: This OEM-spec capacitor is manufactured to exact Carrier factory tolerances (±5% MFD). Generic aftermarket units often carry ±10% tolerance, which accelerates motor bearing wear over time and can shorten equipment service life.
• Install Difficulty: 2/5 — Discharge the capacitor fully before handling any terminals. Tools needed: 1/4" nut driver, needle-nose pliers, multimeter (capacitance setting). Always photograph existing wiring connections before disconnecting. Turn off all power at disconnect box before beginning.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier model PY1REA060074AAWB packaged units. Also cross-references Totaline P291-0403 and Genteq C304L / 27L571. Always verify the MFD rating and voltage on your unit's data plate or existing capacitor before ordering — voltage rating must be equal to or greater than the original. Our fitment team is available to confirm compatibility before you order.