Description
This is a BRAND NEW OEM Lennox/Armstrong/Ducane Gas Furnace Air Pressure Switch. The Lennox/Armstrong/Ducane part # is 52M40 (also 52M4001) and the Honeywell part # IS20152-3437). It's rated at 0.60" W/C PF with 1 hose ports and 2 wiring terminals.
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:
52M40 52M4001
Repair Difficulty Level:
Partial List of Units that Use This Item:
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