this component should be installed and calibrated by a licensed technician to ensure the reset curve is properly aligned with the specific HVAC system requirements

Utilizing a 1/2 inch shaft diameter and CCW rotation

including the Armor and Power-Fin series

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

Critical for maintaining energy efficiency in HVAC pneumatic systems

Lennox 14A45 Pressure Switch R-407A this component should be installedThe 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