OEM Carrier Single Run Capacitor 35 MFD 370V for Model YAC3080YAC101

This is the factory-specified OEM single run capacitor for the Carrier YAC3080YAC101 air conditioning system, originally sold under Carrier/Totaline part number P291-3503 (now superseded by P291-3504).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.

• Specs: 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
• OEM vs Generic: 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.
• Install difficulty: 2/5 — 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.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier YAC3080YAC101 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.