Heil Quaker ICP 1172166 Run Capacitor

The Heil Quaker ICP 1172166 Run Capacitor is a high-performance 55/5 Microfarad 440Vac Round Dual Run Capacitor engineered for continuous duty in residential and commercial condensing units. As an OEM-spec replacement for ICP part number 1172166, this dual-rated component provides the precise phase shift required to optimize compressor and fan motor automotive startup and running efficiency. This HVAC dual run capacitor is rated for 440VAC, making it a robust upgrade for older 370V systems while ensuring superior dielectric strength and heat dissipation. Encased in a round aluminum housing, it features standard 1/4-inch male quick-connect terminals clearly marked for Common (C), Hermetic (H), and Fan (F) leads to streamline field installation. Designed to meet UL 810 safety standards with a 10,000 AFC internal protector, this 55+5 MFD 440V capacitor ensures your equipment maintains peak torque and power factor correction under heavy thermal loads.

• Dual-Rated Performance: Consolidates 55 MFD for the compressor and 5 MFD for the condenser fan into a single space-saving round run capacitor.
• Voltage Versatility: Fully compatible with both 370V and 440V applications, providing a higher safety margin and extended service life.
• OEM Compatibility: Precision engineered for Heil, Quaker, Tempstar, and Comfortmaker systems requiring ICP 1172166 specifications.
• Reliable Construction: Oil-filled design facilitates optimal cooling and protects internal metallized polypropylene film from premature degradation.

Can I use a 440V capacitor to replace a 370V capacitor?
Yes. You can always move up in voltage rating (e.g., replacing 370V with 440V) to increase durability, but you must never install a capacitor with a lower voltage rating than the original component.

What are the symptoms of a failing 55/5 MFD dual run capacitor?
Common indicators include the compressor "hard starting," the outdoor fan spinning slowly or not at all, an audible humming from the contactor, or visible bulging/leaking at the top of the capacitor casing.

Does the polarity of the terminals matter during installation?
While capacitors are non-polarized, the specific lead assignments are critical. Always ensure the compressor lead is on the 'HERM' terminal, the fan motor on 'FAN', and the line voltage on 'C' (Common).

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.