18L31 18L301 20J44 20J4401 - OEM Lennox Armstrong Ducane Air Pressure Switch
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Description
This is a brand new OEM Lennox Armstrong Ducane upgraded Air Pressure Switch. It has two wiring terminals and one hose port. It replaces the part numbers listed below.
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:
18L31 18L301 20J44 20J4401
Repair Difficulty Level
Partial list of Model numbers that use this part:
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