Lennox 14A43 Pressure Switch R-134A Common Questions: Can I use

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Designed with a multi-voltage primary (120/208/240V)

For contractors managing large-scale mechanical rooms

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Lennox 14A43 Pressure Switch R-134A Common Questions: Can I useThe 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,