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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate line for the GCV90905DXBA high-efficiency gas furnace. This factory-molded tube carries acidic condensate through the drain circuit while holding its shape under heat, preventing the sagging and kinking that lead to standing water and nuisance lockouts. It complements the trap and collector box as part of a properly draining system.
Because this tube is pre-formed to a specific path, the OEM 20201901 installs cleanly where generic hose would have to be cut and coaxed into shape. The correct radius and wall thickness keep condensate moving and resist collapse over years of thermal cycling.
Easy — slip the old tube off its fittings and press the replacement into place. No tools needed; about 10 minutes. Confirm free drainage before returning the furnace to service.