Description
This is a BRAND NEW Lennox/Armstrong/Ducane Furnace Air Pressure Switch. TheLennox/Armstrong/Ducane part # is 9370DO-BS-0021. Switch is rated at -0.85" w/c and has 2 wiring terminals with two hose ports.
Function:
An air switch is safety designed to ensure that your inducer motor is running at the proper RPM, and creating the proper vacuum for your furnace to flue safely.
Replaces Old Part #s:
9370DO-BS-0021
Repair Difficulty Level:
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