{"product_id":"carrier-contactor-ha1ajx018000aaaa","title":"OEM Carrier Contactor HN51KC024 for Model HA1AJX018000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Contactor HN51KC024 for Model HA1AJX018000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis OEM Carrier definite purpose contactor (HN51KC024) is the genuine factory replacement for the Carrier HA1AJX018000AAAA 1.5-ton condensing unit. The contactor is the high-voltage relay that delivers power to the compressor and condenser fan motor whenever the thermostat calls for cooling. Burned, pitted, or welded contacts commonly cause a no-start, a persistent hum, or rapid short-cycling that stresses the compressor. This contactor matches Carrier's original 24V coil voltage, pole configuration, and amp rating, so it seats in the existing bracket and reconnects to the same line, load, and coil terminals without adapters. Installation is a moderate job for a trained technician: shut off power at the disconnect, photograph the wiring, transfer leads one at a time, and verify the contacts pull in cleanly. Genuine OEM ampacity ensures dependable switching and protects the compressor from chatter damage. In stock and ready to ship. Orders placed before 3PM CST ship the same business day to minimize downtime. Fitment guaranteed for the HA1AJX018 series condensing unit.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model HA1AJX018000AAAA.\u003c\/p\u003e\n\u003ch2\u003eShipping\u003c\/h2\u003e\n\u003cp\u003eSame-day shipping before 3 PM CST. 30-day returns on uninstalled parts.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Carrier","offers":[{"title":"Default Title","offer_id":62942697226611,"sku":"carrier-contactor-ha1ajx018000aaaa","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-carrier-contactor-ha1a_1b73f8b6-87e9-4abf-b891-02f50a445e3a.jpg?v=1781465644","url":"https:\/\/nationalhvacparts.com\/products\/carrier-contactor-ha1ajx018000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}