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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for AMH950704CXAF gas furnaces. This flexible tube routes acidic condensate away from the secondary heat exchanger and inducer housing to the drain trap, keeping your high-efficiency furnace draining cleanly and preventing water backup, corrosion, and nuisance pressure-switch lockouts.
Aftermarket hoses often use thinner walls or the wrong inside diameter, which can slip off barbed fittings or crack when exposed to acidic condensate. This OEM tube is cut to the exact factory length and diameter so it seats securely on the original couplings with no trimming or adapters — the correct fit the first time.
Rated Easy (DIY-friendly, ~15 minutes). Power down the furnace, note the routing of the old hose, slide it off the fittings, and press the new tube on. Always confirm the model number on your unit's rating plate before ordering.