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The Goodman 20201901 is a factory-original condensate drain hose tube designed for the GCH90904CXAB high-efficiency condensing gas furnace and compatible Goodman/Amana equipment. This molded tube is part of the sealed condensate path that drains acidic combustion moisture from the secondary heat exchanger and collector box to the trap and drain line. Replacing an aged or split drain tube restores proper condensate flow and prevents pressure-switch faults and water damage.
The OEM Goodman 20201901 matches the factory length, contour, and fitting size for a leak-free, no-guesswork install. A generic equivalent is a lower-cost alternative that may need field trimming and additional clamps to replicate the original routing and drop.
Very Easy (1/5). Simple clamped hose swap taking about 10 minutes. Turn off furnace power, remove the old tube, seat and clamp the replacement, then verify condensate drains freely and check for leaks after startup.