{"product_id":"carrier-run-capacitor-hb1ajx042000aaaa","title":"OEM Carrier Run Capacitor Replacement for Model HB1AJX042000AAAA","description":"\u003cdiv\u003e\n\u003ch1\u003eOEM Carrier Run Capacitor Replacement for Model HB1AJX042000AAAA\u003c\/h1\u003e\n\u003cp\u003eThis genuine OEM Carrier run capacitor delivers the steady phase-shifted voltage that keeps your compressor and condenser fan motor running efficiently on the HB1AJX042000AAAA unit. Built to the exact microfarad (MFD) and voltage rating specified by Carrier, it ensures correct torque and smooth, energy-efficient operation—matching capacitance is essential, since the wrong value shortens motor life and wastes power. A weak, bulging, or failed capacitor is the single most common HVAC failure, typically causing a humming unit that won't start, a fan that won't spin, or a compressor that trips on overload. Replacement is an easy repair for a careful DIYer: shut off power at the disconnect, discharge the capacitor safely with an insulated resistor, photograph the terminal wiring, transfer leads to the matching HERM, FAN, and C terminals, and secure the new capacitor in its strap. Most installs take 15 to 20 minutes. In stock and ships same-day when ordered before 3PM CST, restoring full performance fast with genuine Carrier reliability.\u003c\/p\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis part is compatible with Carrier model HB1AJX042000AAAA.\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":62942658494835,"sku":"carrier-run-capacitor-hb1ajx042000aaaa","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-hb1ajx042000aaaa.jpg?v=1781473337","url":"https:\/\/nationalhvacparts.com\/products\/carrier-run-capacitor-hb1ajx042000aaaa","provider":"National HVAC Parts","version":"1.0","type":"link"}