{"product_id":"carrier-hb1cjx042000aaaa-capacitor-uq16bq","title":"OEM Carrier Dual Run \u0026 35+5 MFD Start Capacitor Kit for HB1CJX042000AAAA","description":"\u003ch1\u003eOEM Carrier Dual Run Capacitor \u0026amp; Start Capacitor Kit for Model HB1CJX042000AAAA\u003c\/h1\u003e\u003cp\u003eThis factory-specified OEM capacitor set — including dual run capacitor \u003cstrong\u003eP291-3574RS\u003c\/strong\u003e and start capacitor \u003cstrong\u003eP281-8806\u003c\/strong\u003e — is the direct replacement for the \u003cstrong\u003eCarrier HB1CJX042000AAAA\u003c\/strong\u003e split-system condenser. The dual run capacitor sustains both the compressor and condenser fan motor during normal operation, while the start capacitor delivers the extra electrical boost needed to initiate compressor startup under load. When either fails, you'll experience symptoms ranging from a loud hum with no motor movement, a compressor that trips on thermal overload, intermittent short-cycling, or a fan that spins freely by hand but won't self-start under power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Dual Run Capacitor P291-3574RS — 35+5 MFD | 440V rated | Round case | ±3% factory tolerance. Start Capacitor P281-8806 — high-capacitance boost design | matched to OEM compressor start requirements for HB1CJX042000AAAA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e These are genuine OEM Carrier components manufactured to exact factory tolerances. Aftermarket capacitors commonly carry ±10% MFD variance, which stresses compressor windings over time and can void equipment warranties. OEM fit is confirmed — no adapters or wire splices required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always disconnect and lock out power before servicing. Capacitors retain lethal charge after shutdown — discharge fully using an insulated resistor tool before handling terminals. Tools needed: 1\/4\" nut driver, needle-nose pliers, multimeter with capacitance function. Photograph all wiring before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Orders placed before 3 PM ship same business day from our climate-controlled parts warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier HB1CJX042000AAAA\u003c\/strong\u003e condenser unit. Always confirm MFD rating, voltage, and terminal configuration against your unit's data plate before installation. Our HVAC parts specialists are available to verify fitment — contact us before ordering if you have any questions. In stock and ready to ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909344743795,"sku":"CARRIE-HB1CJX042000AAAA-CAPACITOR-P291-3574RS","price":25.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909344776563,"sku":"CARRIE-HB1CJX042000AAAA-CAPACITOR-P291-3574RS-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-P291-3574RS.jpg?v=1782915405","url":"https:\/\/nationalhvacparts.com\/products\/carrier-hb1cjx042000aaaa-capacitor-uq16bq","provider":"National HVAC Parts","version":"1.0","type":"link"}