Utilizing a 1/2 inch shaft diameter and CCW rotation

preventing energy loss

utilizing the same mounting footprint and wiring logic

this unit maintains a consistent downstream pressure even amidst fluctuating inlet supplies up to a 300 PSIG maximum

alerting you to the need for a filter-drier replacement

Lennox 14A45 Pressure Switch R-407A Utilizing a 1/2 inch shaftThe Lennox 14A45 Pressure Switch is a high precision, two stage OEM furnace replacement designed to ensure safe ignition and optimal inducer airflow. This dual pressure switch is factory calibrated with specific set points of . 50" and . 90" WC, acting as a critical safety limit that confirms the draft inducer is pulling sufficient vacuum before allowing the gas valve to open. As a direct replacement for the legacy Lennox 103613 03 and UniControl