OEM Carrier Single Run Capacitor for Model PY2PPB042090AB

This is the factory-specified OEM single run capacitor replacement for the Carrier PY2PPB042090AB packaged heat pump unit. A single run capacitor continuously supplies the phase-shifted electrical charge needed to keep the compressor or condenser fan motor running at full efficiency. When a run capacitor degrades or fails, you'll typically notice symptoms such as a humming unit that won't fully start, a compressor or fan motor that cuts out shortly after starting, increased energy consumption, or a complete no-start condition. Replacing it promptly protects your compressor and motor from damaging heat and stress.

• OEM Part Numbers: P291-0403 (primary) | P291-1503 (alternate/replacement) — both are factory-authorized single run capacitors for this unit
• OEM vs Generic: OEM capacitors are manufactured to exact factory MFD tolerance (±3–5%), ensuring proper motor start torque and run efficiency. Generic capacitors frequently carry ±10% tolerance, which accelerates motor winding wear and shortens overall system life.
• Install Difficulty: 2/5 — Always disconnect power and discharge the capacitor before handling. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter to verify discharge. Photograph all wiring connections before removing the old capacitor.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse — get your system back online fast.

Compatibility: Engineered specifically for the Carrier PY2PPB042090AB packaged gas/electric heat pump unit. Always verify the MFD rating and voltage on your unit's data plate before ordering to confirm fitment. Have questions? Our HVAC parts specialists verify compatibility before you buy — contact us anytime.