Lennox 11U72 Pressure Switch 320819-301 ensuring consistent thermal discharge and

ensuring consistent thermal discharge and operational efficiency

Is the 77360 compatible with steam valves

Broad Cross-Reference: Compatible with Allied Air

Optimized Heat Transfer: The 3 cell design maximizes surface area for efficient energy consumption and lower utility costs

Lennox 11U72 Pressure Switch 320819-301 ensuring consistent thermal discharge andThe Lennox 11U72 Pressure Switch is a critical safety component designed for precise combustion air monitoring in high efficiency gas furnaces. As a genuine OEM replacement part (also identified as Lennox 104371 09), this single pole, single throw (SPST) switch features a normally open contact configuration. It is factory calibrated to actuate at a 0. 90" WC (inches water column) set point, ensuring the draft inducer motor is generating sufficient