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The Goodman 20201901 is a genuine OEM condensate drain hose tube built for the Goodman/Amana AMVM960603BXBA modulating, variable-speed 96% AFUE gas furnace. This is a heavier main drain run in the condensate system, carrying acidic moisture from the collector box and secondary heat exchanger to the trap and drain line. Deteriorated or blocked drain tubing triggers pressure-switch lockouts, nuisance shutdowns, and water damage — this factory part restores proper drainage and protects the furnace.
Aftermarket hose sold by the foot rarely matches the molded bends and diameter transitions of the original. The genuine OEM 20201901 is pre-formed to the exact routing the AMVM960603BXBA needs, ensuring a leak-free press-fit on every barb and long service life against warm, acidic condensate that cracks cheaper tubing.
Plan on 15–20 minutes. De-energize the furnace, note the routing of the existing hose, release the clamps or clips, remove the old tube, and press the OEM replacement fully onto each fitting following the same path. Pour water through the drain to verify free flow before returning the unit to service.