{"product_id":"carrier-yac3080yac101-capacitor-42ll7r","title":"OEM Carrier Single Run Capacitor 35 MFD 370V for YAC3080YAC101","description":"\u003ch1\u003eOEM Carrier Single Run Capacitor 35 MFD 370V for Model YAC3080YAC101\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM single run capacitor for the \u003cstrong\u003eCarrier YAC3080YAC101\u003c\/strong\u003e air conditioning system, originally sold under Carrier\/Totaline part number \u003cstrong\u003eP291-3503\u003c\/strong\u003e (now superseded by P291-3504). The run capacitor stays energized throughout the entire operating cycle, providing the sustained electrical phase-shift that keeps the compressor motor spinning efficiently. When it degrades or fails, symptoms include a loud hum with no compressor start, the system short-cycling within minutes of start-up, reduced cooling output, or a tripped breaker from motor overload. Replacing a weak capacitor promptly protects the compressor — the most expensive component in your system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 35 MFD (microfarad) | 370V rated (440V-rated successor is a direct, code-compliant upgrade) | Oval case | ±6% capacitance tolerance | Manufactured by Hartland Controls \/ Totaline for Carrier\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM capacitors are built to exact Carrier factory tolerances and undergo 100% electrical testing before leaving the factory. Off-brand generics often drift outside the ±6% MFD window, accelerating compressor wear and voiding equipment warranties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always discharge the capacitor before touching terminals (use a resistor or insulated screwdriver). Tools needed: 1\/4\" nut driver, needle-nose pliers, multimeter with capacitance function. Photograph all wiring connections before disconnecting the old capacitor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eYAC3080YAC101\u003c\/strong\u003e air conditioning unit. Cross-references include Totaline P291-3503, P291-3504, and Hartland Controls HCK350V370102Z. Verify the MFD rating and voltage on your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — call or chat today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640209920371,"sku":"CARRIE-YAC3080YAC101-CAPACITOR-P291-3503","price":30.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640209953139,"sku":"CARRIE-YAC3080YAC101-CAPACITOR-P291-3503-GEN","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-P291-3503_0b23fe1d-e441-46cb-b26a-c83723f0cecf.jpg?v=1775039095","url":"https:\/\/nationalhvacparts.com\/products\/carrier-yac3080yac101-capacitor-42ll7r","provider":"National HVAC Parts","version":"1.0","type":"link"}