including the Armor and Power-Fin series

Featuring a robust aluminum body and industrial-grade NBR seals

alerting you to the need for a filter-drier replacement

With self-lubricating bushings and a integrated minimum position adjustment screw

Lennox 14A45 Pressure Switch R-407A including the Armor and Power-FinThe 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