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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate management component designed for the GCH90453BXAB gas furnace and compatible Goodman/Amana 90%+ AFUE condensing units. This flexible hose routes acidic condensate away from the secondary heat exchanger and inducer assembly to the drain trap, keeping moisture out of the burner box and preventing corrosion or nuisance lockouts.
This is the factory OEM part, molded to the exact bend radius and inside diameter of the original so it seats on the drain collar without kinking or leaking. Universal generic hose can restrict flow or slip off the fitting, causing condensate backup and error codes. Choose OEM for a guaranteed, drip-free fit.
Easy (1/5). Slip off the old hose, route the new one to the trap, and secure the clamp. No special tools required. Always power down the furnace before servicing.