Heil Quaker ICP 1178074 Contactor

The Heil Quaker ICP 1178074 Contactor is a heavy-duty, 2-pole definite purpose contactor engineered for high-cycle reliability in residential and commercial HVAC units. Rated at 30 Amps (32 FLA) with a 24V AC coil, this genuine OEM component serves as a direct drop-in for problematic switching in condenser fans and compressors. Built to handle the inductive surge of high-efficiency motors, it features a totally enclosed coil to prevent debris accumulation and pitting-resistant silver cadmium oxide contacts for extended service life. This contactor is essential for restoring proper 24V control circuit functionality, preventing the common chattering or humming caused by pitted points or a failing magnetic coil. Designed for seamless integration into International Comfort Products (ICP), Heil, Tempstar, and Comfortmaker systems, it ensures your current remains stable under peak load conditions.

Key Benefits

• OEM Compatibility: Exact replacement for Heil Quaker 1178074, ensuring correct terminal alignment and mounting footprint.
• Durable 2-Pole Design: Provides simultaneous switching for both the compressor and condenser fan, supporting high-efficiency 30A HVAC applications.
• Optimized 24V Coil: Designed to maintain a strong magnetic hold even during minor voltage fluctuations, eliminating contactor chatter.
• Industrial-Grade Terminals: Equipped with lug and spade connectors to facilitate secure, high-conductivity wiring for field technicians.
• Quiet Operation: Precision-milled plunger reduces mechanical noise during cycle engagement.

Common Questions

What are the signs of a failing 1178074 contactor?
Contractors typically report a chattering noise, a loud buzzing from the 24V coil, or blackened, "pitted" contact pads. If the compressor won't engage despite receiving a call for cooling, test for 24VAC at the coil terminals; lack of continuity across the poles when energized indicates a mechanical or electrical failure.

Can I use a 1-pole contactor as a substitute?
No. This is a 30 amp 2-pole contactor designed to break both legs of the power supply. Using a single-pole unit on a system designed for a double-pole can cause safety hazards and may keep parts of the circuit "hot" even when the system is off.

Is this part compatible with other ICP brands?
Yes, this ICP 1178074 part is the standard OEM replacement for a wide range of brands under the International Comfort Products umbrella, including Tempstar, Arcoaire, Day & Night, and KeepRite.

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.