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The Goodman 20201901 is a genuine OEM condensate drain hose assembly for the GMH950905DXAB 96% AFUE gas furnace. This is a larger primary drain run than the shorter jumper tubes in the same drain kit, carrying condensate from the collector box and secondary heat exchanger to the drain trap. A sound drain path keeps the pressure switches happy and prevents water backup into the burner compartment.
The OEM 20201901 arrives pre-formed to the exact routing and fitting sizes Goodman designed for this cabinet. Generic tubing is sold by the foot and must be cut and clamped in the field, introducing kinks and leak points. Because this hose handles corrosive condensate continuously, the factory-spec part is the durable, worry-free option.
Easy (1/5). Cut power, detach the old hose at each barb, route the new tube along the factory path, secure the clamps, and pour water through to verify flow to the trap. Confirm the model tag before ordering.