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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate line for the Goodman/Amana AMH950453BXAF condensing gas furnace. It carries acidic combustion condensate from the secondary heat exchanger and collector box to the drain trap. Over time these hoses harden, split, or clog with biofilm — causing water leaks, mold, and drain-pressure lockout codes. Replacing with the exact OEM tube restores reliable drainage.
Because it is a genuine OEM part, the 20201901 is molded to the precise length, diameter, and bend needed for a factory-correct, leak-free routing. Generic tubing risks improper barb fit and kinking. For a condensing furnace's acidic condensate, OEM material is the safe choice.
Easy — Roughly 10–15 minutes. Cut power, remove the old hose from its barbed fittings, flush out any sludge, and push the new hose fully into place. Confirm a continuous downhill run with no kinks. No special tools needed.