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The Goodman 20201802 is a genuine OEM condensate drain hose tube engineered for the AMV90905DXAB 90%+ efficiency gas furnace and compatible Goodman/Amana high-efficiency models. This flexible drain tube routes condensate away from the secondary heat exchanger and collector box, keeping your furnace's drain system sealed and free of leaks. High-efficiency condensing furnaces produce acidic condensate, so using the correct OEM tube prevents cracking, blockages, and water damage around the unit.
OEM vs. Generic: A genuine Goodman 20201802 is molded to the exact bend radius and fitting diameter of your furnace's drain assembly. Generic replacements often require trimming or force-fitting, which can kink the line and cause slow drainage or overflow. OEM guarantees a factory-correct, leak-free seal and preserves your warranty.
Install Difficulty: Easy (1/5). Power down the furnace, disconnect the old tube at both fittings, seat the new tube, and confirm a tight drain trap connection. Typical replacement takes under 15 minutes with no special tools.