International Comfort Products 1192721 Furnace Pressure Switch

The International Comfort Products 1192721 is a genuine OEM furnace pressure switch designed for ICP, Heil, Tempstar, and Comfortmaker gas furnace systems. This critical safety component monitors airflow in the heat exchanger chamber to ensure safe furnace operation.

Key Features:

• Genuine OEM replacement part ensuring proper fit and function
• Monitors inducer motor airflow to verify proper venting
• Automatic safety shutoff prevents operation with insufficient airflow
• Precision-engineered switch mechanism for reliable performance
• Durable construction designed for demanding HVAC environments

The pressure switch works as an automatic safety feature by detecting whether the inducer motor is creating adequate airflow before allowing the furnace to ignite. If airflow is insufficient, the switch prevents ignition, protecting against potential heat exchanger damage and unsafe combustion conditions. Common symptoms of a faulty pressure switch include furnace failure to ignite, starting then stopping, or frequent cycling.