International Comfort Products 1065294 Furnace Limit Switch - 140-30

The International Comfort Products 1065294 is a genuine OEM replacement limit switch designed for residential and light commercial gas furnaces. This safety control is rated at 140°F with a 30°F differential, meaning it activates at 140 degrees Fahrenheit and resets approximately 30 degrees lower.

Key Features:

• Temperature rating: 140°F activation with 30°F differential
• Genuine OEM part manufactured by International Comfort Products
• Critical safety component that prevents furnace overheating
• Controls blower fan operation for optimal comfort and efficiency
• Direct replacement for compatible ICP, Heil, Arcoaire, and Tempstar furnace models

The limit switch serves dual functions in your heating system. During normal operation, it monitors the plenum temperature and signals the blower fan to activate once the air reaches the proper temperature, preventing cold air from being distributed through your home. As a safety device, it protects against overheating by shutting down the burner if internal temperatures exceed safe limits, helping prevent heat exchanger damage and potential carbon monoxide hazards.

This component is located in the furnace plenum where it can accurately sense supply air temperature. When a limit switch fails, common symptoms include short cycling, the furnace shutting down unexpectedly, or the blower fan running continuously. Regular maintenance and timely replacement of failed limit switches ensures safe, efficient furnace operation.