Heil Quaker ICP 1174412 Pressure Switch 30067439-890 Adjustments should only be made

Adjustments should only be made using a digital manometer to ensure the system remains within manufacturer specifications

Exceptional Buoyancy: The 8-inch diameter (C8 series) provides high displacement for heavy mechanical valve shut-offs

hard starting

or a worn oil pump

ensuring the heating cycle remains stable and efficient

Heil Quaker ICP 1174412 Pressure Switch 30067439-890 Adjustments should only be madeThe Heil Quaker ICP 1174412 Pressure Switch is an essential safety component designed for precise airflow monitoring in gas fired furnaces and HVAC systems. As a genuine OEM replacement part, it ensures the inducer motor establishes a proper draft before ignition, preventing hazardous exhaust buildup. This specific low pressure switch is factory calibrated to a normally open state, configured to close when it senses a negative pressure of 0. 45" WC