Heil 3900020801 Air Temperature Sensor for Gas Furnaces

The Heil 3900020801 is an OEM air temperature sensor designed for ICP, Heil, and Quaker brand gas furnaces. This genuine replacement part monitors air temperature within the furnace system to ensure proper combustion control and safe operation.

Key Features:

• Genuine OEM part manufactured by International Comfort Products (ICP)
• Monitors air temperature for precise furnace operation
• Essential for maintaining safe combustion and efficient heating
• Direct replacement for worn or faulty temperature sensors
• Compatible with Heil, ICP, and Quaker brand furnace systems

Temperature sensors play a critical role in furnace safety and performance by detecting airflow conditions and signaling the control board to adjust operation accordingly. Symptoms of a failing air sensor include error codes, unexpected shutdowns, erratic cycling, or inconsistent heating performance. Replacing a faulty sensor restores proper temperature monitoring and ensures your furnace operates safely and efficiently.