OEM Carrier Start Capacitor P281-1766 for Model PH3ANA042000BBAA

This is the genuine OEM start capacitor for the Carrier PH3ANA042000BBAA packaged heat pump unit, sold under Carrier part number P281-1766. The start capacitor provides the high-torque electrical kick required to get the compressor motor spinning at startup. When this component fails, the compressor will typically hum without starting, trip the overload protector, or cause the unit to lock out on a fault code — leaving you with no heating or cooling until the part is replaced.

• Specs: OEM-specified start capacitor | Factory-matched microfarad (MFD) and voltage rating | Round or oval case per factory configuration | Designed for Carrier PH3ANA042000BBAA packaged heat pump
• OEM vs Generic: This is a genuine Carrier OEM part (P281-1766), manufactured to exact factory tolerances. Generic start capacitors often carry wider MFD tolerance bands (±10% or more), which can stress the compressor motor windings and shorten equipment life. OEM is always the recommended choice for compressor protection.
• Install Difficulty: 3/5 — Start capacitors are typically located in the control or compressor compartment. Always disconnect power and discharge the capacitor fully before handling. Tools needed: flathead and Phillips screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, and a multimeter. Photograph all wiring connections before removal.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: This part is the factory-specified start capacitor for Carrier model PH3ANA042000BBAA packaged heat pump systems. Always verify the MFD and voltage ratings on your unit's data plate or existing capacitor before ordering to ensure correct fitment. Our HVAC parts specialists are available to confirm compatibility before you buy — order with confidence and get back up and running fast.