OEM Carrier Condenser Contactor for Heat Pump PH4ZNA036000AA

The contactor is the high-voltage switch that powers your Carrier Performance heat pump's outdoor unit. When the thermostat calls for cooling or heating, it sends a 24VAC signal to the contactor coil, which pulls the contacts closed and feeds line voltage to the compressor and condenser fan motor at the same time. Because it cycles on every single start, it is one of the hardest-working and most failure-prone parts in the unit. When a contactor fails, you'll often hear loud chattering or a steady buzzing/humming from the outdoor unit, see the fan and compressor refuse to start — or refuse to shut off after the thermostat is satisfied — find burnt or pitted contacts, or smell hot melted plastic. Ants and debris lodging in the contacts are a common cause of sticking. This is a definite-purpose OEM contactor matched to the unit's amperage draw: correct pole count (typically 1- or 2-pole), 24V coil, and the contact rating (FLA/LRA) Carrier specified for this compressor-and-fan combination. Terminal layout and mounting bracket match the original. Why OEM matters: contactors live or die by their contact material and current rating. Generic contactors often use undersized or lower-silver-content contacts that pit, arc, and weld shut far faster, eventually sticking the compressor on or failing to start it. An OEM-rated contactor handles the inrush locked-rotor current (LRA) without premature pitting. Install difficulty: 2 of 5. Tools: 1/4" and 5/16" nut drivers, a flat screwdriver, and a multimeter to confirm 24V at the coil; label the wires before removing them. #1 safety warning: pull the disconnect and shut off the breaker to the outdoor unit before touching the contactor — the line-voltage terminals stay live even when the system is off. 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.

Compatibility

This part is compatible with Carrier model PH4ZNA036000AA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

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.

Shipping & Returns

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.