{"product_id":"carrier-hb1cjx048000aaaa-capacitor-wojspw","title":"OEM Carrier Dual Run \u0026 Start Capacitor Kit for HB1CJX048000AAAA","description":"\u003ch1\u003eOEM Carrier Dual Run Capacitor (P291-4074RS) \u0026amp; Start Capacitor (P281-8806) for Model HB1CJX048000AAAA\u003c\/h1\u003e\u003cp\u003eThese factory-specified OEM replacement capacitors are engineered for the \u003cstrong\u003eCarrier HB1CJX048000AAAA\u003c\/strong\u003e 4-ton packaged or split-system unit. The \u003cstrong\u003edual run capacitor (P291-4074RS)\u003c\/strong\u003e continuously powers both the compressor and condenser fan motor during operation, while the \u003cstrong\u003estart capacitor (P281-8806)\u003c\/strong\u003e delivers the high-torque burst needed to kick the compressor into motion. When either fails, symptoms range from a loud hum with no motor movement, to hard starting, tripped breakers, or a system that shuts down within minutes of starting. Replacing both together is best practice — a failing start capacitor accelerates stress on the run capacitor, and vice versa.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Numbers:\u003c\/strong\u003e Dual Run Capacitor — \u003cstrong\u003eP291-4074RS\u003c\/strong\u003e | Start Capacitor — \u003cstrong\u003eP281-8806\u003c\/strong\u003e | Factory-matched to Carrier HB1CJX048000AAAA specifications and tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier capacitors are manufactured to ±3% MFD tolerance, compared to ±10% on generic alternatives. Tighter tolerance means cleaner motor starts, reduced winding stress, and longer compressor life — critical on a 4-ton system running at peak summer loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power and discharge capacitors fully before handling — stored charge can cause serious injury. Tools needed: 1\/4\" nut driver, insulated needle-nose pliers, multimeter with capacitance mode. Photograph all wiring connections before removal. The start capacitor will have a bleed resistor on some units — reinstall it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty \u0026amp; Shipping:\u003c\/strong\u003e Backed by a 1-year OEM factory warranty against defects. In stock and ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e These capacitors are direct OEM replacements for the \u003cstrong\u003eCarrier HB1CJX048000AAAA\u003c\/strong\u003e. Always verify capacitance (MFD) and voltage ratings printed on your existing capacitors against your unit's data plate before installing. The 048 designation confirms a 4-ton configuration — ensure your replacement matches the original specs exactly. Not sure about fitment? Our HVAC parts specialists verify compatibility before you order — contact us and reference model \u003cstrong\u003eHB1CJX048000AAAA\u003c\/strong\u003e for immediate assistance. Orders placed before 3PM EST ship the same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909344448883,"sku":"CARRIE-HB1CJX048000AAAA-CAPACITOR-P291-4074RS","price":25.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909344481651,"sku":"CARRIE-HB1CJX048000AAAA-CAPACITOR-P291-4074RS-GEN","price":21.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-start-P291-4074RS.jpg?v=1782915504","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hb1cjx048000aaaa-capacitor-wojspw","provider":"National HVAC Parts","version":"1.0","type":"link"}