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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate drain assembly built for the GCH950904CXAE high-efficiency gas furnace and related Goodman/Amana condensing models. It channels acidic condensate from the secondary heat exchanger and collector box to the drain trap, keeping moisture away from sensitive internal components.
This is a factory-original replacement, so it arrives pre-formed to the correct routing length and connector size for your furnace — a direct swap with no modification required.
A universal drain line may save a few dollars but rarely matches the factory bend radius or barb fit, inviting leaks and blocked drainage. The genuine Goodman 20201901 is molded to spec, protecting your inducer, pressure switches, and control board while keeping your warranty intact.
Difficulty: Easy (DIY-friendly). Cut power at the disconnect, detach the old hose from its fittings, install the replacement, and verify the trap holds water. Typical replacement time is 10–15 minutes with basic hand tools.