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The Goodman 20201802 Drain Hose Tube is a genuine OEM condensate drainage component engineered for the AMH950905DXAD gas furnace and compatible Goodman/Amana 95% AFUE models. This flexible hose routes condensate away from the secondary heat exchanger and collector box to the drain trap, protecting internal components from moisture damage and corrosion. Because condensate is mildly acidic, using the correct factory-spec tubing is critical for long-term reliability.
This is a genuine OEM part cut and formed to the exact length and bend radius the furnace cabinet requires. Generic aftermarket tubing often needs field trimming, may kink at tight bends, and can allow condensate backups that trip the pressure switch. The OEM hose drops in and seals correctly the first time.
Easy (1/5). A basic DIY replacement — power down the furnace, disconnect the old hose at both fittings, and press the new hose into place. No special tools required. Always confirm the drain trap is clear while the panel is open.