Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
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This genuine OEM Carrier contactor (HC1AJX042000AAAA) is the electrical switch that powers your compressor and condenser fan motor on and off in response to the thermostat call for cooling. Built to factory specifications, it features properly rated contacts and coil voltage to handle the inrush current of your equipment without pitting, chattering, or premature failure. This part is a direct-fit replacement for Carrier model HC1AJX042000AAAA, matching the original mounting footprint and terminal layout for a clean, hassle-free swap. Installation difficulty is easy to moderate: most technicians complete it in 15-20 minutes after disconnecting power and photographing the wiring. Telltale signs of a bad contactor include a unit that hums but won't start, welded or burnt contacts, or a system that runs continuously. Don't risk compressor damage from a failing contactor—replace it with a true OEM part. In stock and ships same-day on orders placed before 3PM CST. Trust NationalHVACParts.com for genuine Carrier replacement components.
This part is compatible with Carrier model HC1AJX042000AAAA.
Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.