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The Goodman 20201901 is the factory condensate drain hose tube engineered for the GKS90703BXAA gas furnace. It carries condensate away from the secondary heat exchanger and collector box to the drain trap, keeping moisture out of the burner compartment. Because it is molded to the exact bend radius and connector diameter used at the factory, it seats without kinking or leaking — something universal hose rarely matches.
Our OEM Goodman hose is the identical factory part with correct fitting geometry and temperature rating, guaranteeing a leak-free seal. A generic aftermarket hose costs less but often requires trimming or clamps and can collapse under condensate load. For a drain component, we recommend OEM to avoid callbacks from water damage.
Easy (1 of 5). Power down the furnace, slide the old hose off its barbed fittings, and press the new hose on. Most installs take under 10 minutes with no tools. Always confirm the drain trap is clear during replacement.