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This genuine OEM Goodman/Amana 20201901 drain hose tube is a direct-fit replacement for the AMV90704CXAB condensing gas furnace and compatible Goodman/Amana equipment. As part of the condensate management system on a high-efficiency furnace, this molded tube channels acidic condensate from the secondary heat exchanger and collector box to the drain trap, keeping the burner compartment dry and the pressure-proving circuit clear.
The OEM 20201901 is pre-formed to the exact geometry your furnace requires, so it mates cleanly to the collector box and trap without stress on the joints. Substitute tubing often collapses or cracks at the bends, causing slow leaks, condensate backup, and nuisance pressure-switch lockouts. For dependable drainage, the genuine OEM part is the right choice.
Standing water beneath the unit, condensate overflow-switch trips, or heating lockouts tied to restricted or leaking drainage.
Easy — Detach the old hose, route the new 20201901 along the same path, and press it firmly onto both fittings, securing any retaining clamps. Verify free-flowing drainage and no kinks before returning the furnace to service.