Heil Quaker ICP 1003176 Limit Switch

The Heil Quaker ICP 1003176 is a critical OEM replacement limit switch designed for HVAC furnace safety and temperature regulation. Developed for high-reliability performance in International Comfort Products (ICP) residential heating units, this auto reset limit switch monitors internal plenum temperatures to prevent heat exchanger damage and hazardous operating conditions. With an operational range of 100-120F, this bimetal furnace sensor effectively breaks the electrical circuit if temperatures exceed the 120?F threshold, automatically resetting once the system cools to 100?F.

For technicians performing furnace limit switch replacement, the 1003176 offers seamless compatibility with a wide array of Heil, Quaker, Tempstar, and Comfortmaker models including the NDGK, NDLK, and NUGK series. Replacing a faulty 120-20 limit switch is essential for restoring proper HVAC system diagnostics and ensuring the blower motor cycles correctly. This component features a standard flange mount for quick installation in the high-limit position, maintaining the strict safety tolerances required for modern gas furnace operations.

• OEM Compatibility: Precision-engineered for ICP brands to ensure exact fit and factory-spec furnace safety sensor performance.
• Automatic Reset Logic: The 120-20 temperature differential allows for automatic HVAC limit reset, minimizing downtime during minor over-temp events.
• Durable Construction: Built to withstand high-cycling environments in professional heating system maintenance applications.
• Safety Compliance: Crucial for preventing cracked heat exchangers by terminating the burner circuit during airflow restrictions.

What are the symptoms of a failing Heil 1003176 limit switch?
Common signs include the furnace blower running continuously without heat or the burners shutting off prematurely before the thermostat setpoint is reached.

Is this limit switch compatible with other ICP brands?
Yes, the ICP 1003176 is a direct HVAC replacement part for various brands under the International Comfort Products umbrella, including Tempstar, Comfortmaker, and KeepRite.

Can I use a higher temperature limit switch instead of the 100-120F model?
No. You must always match the temperature ratings (L120-20) of the existing bimetal limit switch to ensure the furnace operates within its designed safety parameters.

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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.