OEM Carrier Dual Run Capacitor 40+5 MFD 440V for Model PY1PNA042120ACBA

This OEM dual run capacitor is the factory-specified replacement for the Carrier PY1PNA042120ACBA condensing unit, cross-referenced under OEM part numbers P291-4054 and HC30GB230. The dual run capacitor stores and delivers the electrical charge required to start and sustain both the compressor motor and the condenser fan motor simultaneously. When this capacitor weakens or fails, symptoms include a humming condenser with no motor movement, the unit short-cycling within minutes of startup, a compressor that clicks on but the fan refuses to spin, or complete failure of the outdoor unit to respond to a thermostat call. Left unaddressed, a failing capacitor forces the compressor to draw locked-rotor amperage, dramatically shortening its life.

• Specs: 40+5 MFD (microfarad) | 440V rated | Oval case | Factory ±6% tolerance | 50/60 Hz | UL listed
• OEM vs Generic: This OEM Carrier capacitor is manufactured to exact factory tolerances. Aftermarket capacitors frequently run outside ±10% MFD deviation, accelerating motor and compressor wear and voiding equipment warranties.
• Install difficulty: 2/5 — Always discharge the capacitor fully before handling — stored voltage can be lethal. Tools needed: insulated screwdriver, 1/4" nut driver, needle-nose pliers, and a multimeter to verify discharge. Photograph all wiring before disconnecting terminals (HERM, FAN, COMMON).
• Warranty: 1-year OEM manufacturer warranty. In-stock units ship the same business day from our warehouse — get your system back online fast.

Compatibility: Engineered for Carrier model PY1PNA042120ACBA split-system condensing units. Cross-references OEM part numbers P291-4054 and HC30GB230. Always confirm MFD rating and voltage against your unit's data plate before ordering. Need fitment help? Our HVAC parts specialists verify compatibility before you buy — no guesswork.