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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate drain component engineered for the Goodman GDS90805D2AA gas furnace and compatible high-efficiency models. During normal operation a condensing furnace produces water vapor that must be routed safely to the drain; this molded hose tube channels that condensate from the collector box to the drain trap without kinks or leaks. Using the factory-spec part keeps your drainage system sealed and prevents nuisance lockouts caused by water backup or blocked passages.
This is a genuine Goodman OEM part, molded to the exact bend radius and fitting diameters of your furnace's drain layout. Generic or universal drain tubing often requires trimming and can leak at the collector-box connection because the geometry is not an exact match. The OEM tube seats correctly the first time and preserves your equipment warranty.
Easy — DIY friendly. Power down the furnace, disconnect the old hose from the collector box and drain trap, and slide the replacement into place with the supplied clamps. Most homeowners complete this in 10–15 minutes with basic hand tools. Confirm no leaks by running the furnace through a heating cycle after install.