OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The contactor is the high-current relay that powers the compressor and condenser fan motor in your Carrier PH4ANG030000BCAA heat pump package unit. On every call for heating or cooling, the control board sends 24V to the contactor coil, pulling its contacts together to feed 240V into the outdoor section. Worn or failed contacts produce unmistakable symptoms: the outdoor unit sits dead while the indoor blower runs, a loud humming or chattering rattles from the outdoor cabinet as the contacts arc, or the contacts weld closed and the compressor never shuts off — freezing the evaporator coil and tripping breakers. This is a 2-pole contactor with a 24VAC coil and silver-alloy contacts rated for the unit's full-load and locked-rotor amperage. Before installing, verify the coil voltage (24V), pole count, and contact amp rating match the part you are removing. Genuine OEM is the smart choice for this component. Carrier contactors use silver-cadmium contacts engineered for the compressor's high startup inrush, while generic versions often rely on undersized or copper contacts that pit and erode rapidly. That early wear causes arcing, heat, and voltage drop that strains the compressor windings — turning an inexpensive repair into a far costlier compressor failure. Installation difficulty: 2 out of 5. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, a multimeter, and a photo of the wiring before removal. #1 safety warning: switch off the breaker and the outdoor disconnect, then confirm 0 volts at the line terminals with your meter before touching the contactor — the line side stays energized at 240V regardless of thermostat position. Ships same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.
This part is compatible with Carrier model PH4ANG030000BCAA. Always verify the part number against your unit's data plate before ordering.
OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.
Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.