Lennox 11U72 Pressure Switch Els PW 17895 When your terminal board replacement

When your terminal board replacement requires precision pin alignment and high-conductivity contact points

interrupting the burner circuit if conditions exceed the preset safety threshold of 140°F

When you're servicing large-scale pneumatic systems

Common Questions Is the 5H0749760001 a manual or automatic reset

Lennox 11U72 Pressure Switch Els PW 17895 When your terminal board replacementThe 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