Lennox 14A43 Pressure Switch 319848-301 The unit features Class B

The unit features Class B insulation and is engineered for continuous duty in vertical or horizontal fan coil configurations

Built within the Erie PopTop series

Direct Retrofit Compatibility: Specifically designed to replace the discontinued HE-67N2-0N0BT series

Because it uses two SPDT (Single Pole Double Throw) relays

Designed for rigorous duty cycles

Lennox 14A43 Pressure Switch 319848-301 The unit features Class BThe 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,