International Comfort Products 1177768 Dual Pressure Switch

The International Comfort Products 1177768 is a genuine OEM dual pressure switch designed for gas furnaces and HVAC systems. This critical safety component monitors pressure levels at two different points in the system to ensure safe combustion and proper venting before allowing ignition to occur.

Key Features:

• Dual sensing capability monitors both draft inducer pressure and exhaust path pressure
• Prevents dangerous backdrafting and carbon monoxide buildup
• Operates on 24-volt electrical power for precise monitoring
• Factory-calibrated pressure settings ensure proper furnace operation
• Features pressure-sensitive diaphragm technology for accurate readings
• Wired in series with gas valve and ignition circuit for maximum safety

This dual pressure switch verifies that the draft inducer motor is creating adequate negative pressure to vent combustion gases safely through the heat exchanger and out of the home. If either pressure sensor detects an unsafe condition—such as a blocked vent, failed inducer motor, or improper draft—the switch will prevent furnace ignition and shut down the system to protect against carbon monoxide exposure and incomplete combustion.

Genuine International Comfort Products replacement parts ensure exact fit, reliable performance, and maintain factory safety certifications. This switch is designed for direct replacement installation using the original mounting points and vacuum hose connections.