{"product_id":"carrier-ph12na018000acaa-capacitor-upzh37","title":"OEM Carrier Dual Run \u0026 Start Capacitor Kit 35+5 MFD 370V — PH12NA01800","description":"\u003ch1\u003eOEM Carrier Dual Run Capacitor 35+5 MFD 370V for Model PH12NA018000ACAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier capacitor kit — consisting of the \u003cstrong\u003eP291-3553RS dual run capacitor\u003c\/strong\u003e and the \u003cstrong\u003eP281-8806 start capacitor\u003c\/strong\u003e — is the factory-specified replacement for the \u003cstrong\u003eCarrier PH12NA018000ACAA\u003c\/strong\u003e split-system air conditioner. The dual run capacitor stores and releases the electrical charge needed to start and sustain both the compressor and condenser fan motor simultaneously, while the start capacitor provides an extra torque boost during compressor startup. Common failure symptoms include an audible hum with no motor movement, the system short-cycling within minutes of startup, or the outdoor unit failing to start entirely while the indoor air handler continues to run.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs (P291-3553RS Dual Run):\u003c\/strong\u003e 35+5 MFD (microfarad) | 370V rated | Round case style | HERM–C–FAN terminals | OEM GE\/Genteq manufactured | Cross-references: HC98JA036D, HC98CA036, 97F9834\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs (P281-8806 Start Capacitor):\u003c\/strong\u003e OEM Carrier start capacitor | Factory-matched for PH12NA018000ACAA compressor | Provides high-torque boost on startup\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier capacitors are manufactured by GE\/Genteq to exact factory tolerances (±3% MFD). Aftermarket units often drift to ±10% MFD, increasing motor stress, shortening compressor life, and voiding equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Always discharge the capacitor fully before touching any terminals (use a resistor or insulated screwdriver). Tools needed: 1\/4\" nut driver, needle-nose pliers, multimeter set to capacitance. Photograph all wiring connections before disconnecting the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before 3 PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003ePH12NA018000ACAA\u003c\/strong\u003e split-system air conditioner. Note that P291-3553RS has been superseded by P291-3554RS — both part numbers are cross-compatible at 35+5 MFD 370V. Always verify MFD rating and voltage against your unit's data plate before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641971888499,"sku":"CARRIE-PH12NA018000ACAA-CAPACITOR-P291-3553RS","price":30.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641971921267,"sku":"CARRIE-PH12NA018000ACAA-CAPACITOR-P291-3553RS-GEN","price":26.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-P291-3553RS_f3df7291-1561-4844-9380-b80c9d0bc24b.jpg?v=1775028441","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph12na018000acaa-capacitor-upzh37","provider":"National HVAC Parts","version":"1.0","type":"link"}