Engineered as a high-reliability OEM replacement

Using a switch with a shorter probe than the 3

Durable Construction: High-grade materials resist corrosion and mechanical stress in demanding condensing unit environments

Steam Rated Durability: Specifically calibrated as a two-position steam zone valve

Lennox 14A43 Pressure Switch Freon Engineered as a high-reliability OEMThe 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,