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The Goodman 20201901 is a factory OEM condensate drain hose tube for the GKS90703BXAE high-efficiency gas furnace and compatible Goodman/Amana 90% AFUE models. It carries acidic condensate through the furnace's drainage circuit — between the collector box, inducer housing, and drain trap — so water clears reliably and the pressure switch reads correctly.
This genuine Goodman OEM hose matches the factory length, diameter, and pre-formed bends. Substituting generic tubing risks kinks, mismatched fittings, and condensate backups that can lock out the furnace. OEM ensures a clean, leak-free drainage path.
Easy (1/5). Remove the old hose from its barbed connections, install the replacement, and secure any clamps without kinking the tube. Turn off power and gas first, then confirm proper drainage after restarting.