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The Goodman 20201901 is the OEM condensate drain hose tube engineered for the GMV91155DXBA high-efficiency gas furnace and compatible Goodman/Amana 90%+ AFUE models. This flexible tube routes acidic condensate away from the secondary heat exchanger and inducer assembly to the drain trap, preventing water backup, nuisance lockouts, and corrosion inside the burner compartment.
Choosing the genuine Goodman part guarantees the exact inside/outside diameter and bend radius needed to seat on the factory drain ports without kinking. Generic universal hose often requires trimming and may not tolerate the low-pH condensate over time, leading to premature cracking. The OEM tube is the correct choice for a leak-free, long-lasting repair.
Easy (1/5). Most homeowners can swap this hose in under 15 minutes with basic hand tools. Power down the furnace, release the retaining clip, slide off the old tube, and press the new one fully onto the port. Verify the drain slopes continuously downhill and test for leaks before closing the cabinet.