System Efficiency: Restores proper airflow dynamics within the cabinet to maintain designed SEER and EER ratings

contractors can optimize static pressure monitoring accuracy

Using a switch with a shorter probe than the 3

Engineered as a high-reliability OEM replacement

We recommend verifying the part number on your existing motor's nameplate or checking your unit's parts manual

Lennox 14A43 Pressure Switch Freon System Efficiency: Restores proper airflowThe Lennox 14A43 Pressure Switch is a genuine OEM dual stage pressure switch engineered for high efficiency Lennox, Armstrong Air, and Ducane furnace models. This 2 stage assembly features factory calibrated set points of 0. 90" W. C. (High) and 0. 45" W. C. (Low), providing precise differential pressure monitoring to ensure the inducer motor is creating the correct draft for safe combustion. As a direct replacement for Lennox 103271 01, 104549 01,