Amana-Goodman 11177113 Dual Pressure Switch

The Amana-Goodman 11177113 pressure switch is a genuine OEM dual (combo) pressure safety switch designed for gas furnaces and HVAC systems. It contains two internal pressure thresholds — typically –0.30 inches water column and –0.75 inches water column — to monitor and validate proper inducer motor operation and airflow through the venting system. As a safety component, this switch helps prevent furnace ignition if venting or combustion air flow is inadequate, protecting against dangerous conditions like blocked flue paths or faulty inducer motors.