Description
This is a brand new OEM Lennox Armstrong Ducane upgraded Air Pressure Switch. This is a dual air pressure switch. The high fire switch is rated at .70" w/c and the low fire switch is rated at .45". It replaces the part numbers listed below.
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:
DNS2-1400-13B DNS2-1400-13A
Repair Difficulty Level:
Partial List of Units that Use This Item:
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