OEM Carrier Single Run Capacitor for Model PY2PPB030040AA

This OEM single run capacitor is the factory-specified replacement for the Carrier PY2PPB030040AA packaged heat pump unit. A single run capacitor provides the continuous phase-shifted current required to keep either the compressor or the fan motor running at peak efficiency. When this capacitor begins to fail, you'll typically notice symptoms such as a loud hum with no motor start, intermittent short-cycling, slow compressor spin-up, or a complete failure of one motor while the other continues to operate. Left unreplaced, a weak capacitor forces motors to draw excess amperage, dramatically shortening compressor and motor life.

• OEM Part Numbers: P291-0403 (primary) | P291-1503 (alternate/superseded) — both are factory-authorized for this application
• OEM vs Generic: This is a genuine Carrier OEM capacitor manufactured to exact factory tolerances (±3% MFD). Aftermarket capacitors commonly run ±10% MFD variance, which increases motor heat, reduces efficiency, and accelerates wear on compressor windings.
• Install Difficulty: 2/5 — Always discharge the capacitor before handling — it can hold a lethal charge even after power is off. Tools needed: insulated screwdriver, 1/4" nut driver, needle-nose pliers, and a multimeter (to verify capacitance before and after). Photograph all wiring connections before disconnecting terminals.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM drop-in replacement for the Carrier PY2PPB030040AA packaged heat pump system. Always cross-reference the MFD rating and voltage printed on your existing capacitor's data label before ordering to confirm an exact match. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.