{"product_id":"carrier-ch14nb03700gaaaa-contactor-1iwxlq","title":"OEM Carrier Contactor 2-Pole 24V Coil HN51KC024 — CH14NB03700GAAAA","description":"\u003ch1\u003eOEM Carrier 2-Pole Contactor HN51KC024 for Model CH14NB03700GAAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement contactor (part number \u003cstrong\u003eHN51KC024\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier CH14NB03700GAAAA\u003c\/strong\u003e split-system air conditioner. The contactor is a high-voltage relay controlled by your thermostat's 24V signal — when the thermostat calls for cooling, the contactor closes and sends line voltage to the compressor and condenser fan motor. A failed contactor is one of the most common reasons an AC unit won't start, hums without running, or runs continuously without shutting off. Pitted or burned contact points are the usual culprit and are often visible during inspection.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 2-pole configuration | 24V AC coil voltage | Heavy-duty contact rating | Direct OEM replacement for part number HN51KC024 — matches factory amperage and coil resistance exactly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM contactors use factory-grade silver-alloy contact points with tighter coil tolerances. Generic substitutes often feature lower-grade contacts that pit faster under load, leading to premature failure and compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect box and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, 1\/4\" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting terminals — high-voltage line and load wires must be reconnected correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eCH14NB03700GAAAA\u003c\/strong\u003e condenser. Verify coil voltage and pole configuration on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — contact us anytime. \u003cstrong\u003eOrder today and this part ships same business day.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909612196211,"sku":"CARRIE-CH14NB03700GAAAA-CONTACTOR-HN51KC024","price":31.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909612228979,"sku":"CARRIE-CH14NB03700GAAAA-CONTACTOR-HN51KC024-GEN","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-2pole-HN51KC024_270294fe-d8eb-4c31-ba76-60af1e3563a6.jpg?v=1782904970","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ch14nb03700gaaaa-contactor-1iwxlq","provider":"National HVAC Parts","version":"1.0","type":"link"}