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The Goodman 20201901 Condensate Drain Hose Tube is a genuine OEM replacement part engineered for the Goodman GCH950904CXAB 95% AFUE high-efficiency gas furnace. This flexible drain tube routes acidic condensate away from the secondary heat exchanger and collector box, preventing pooling, corrosion, and nuisance lockouts on the furnace control board.
The OEM Goodman 20201901 is molded to the exact length and inner diameter specified by Goodman, ensuring a leak-free press-fit at the collector box and drain trap. Generic aftermarket tubing may fit loosely, kink under the blower deck, or degrade faster when exposed to condensate that can reach a pH of 3–4. For a 95% condensing furnace, we recommend the OEM part to protect the heat exchanger warranty.
Easy (1/5) — Typically a 10–15 minute swap. Power down the furnace, remove the blower door, pull the old hose from the barbed fittings, seat the new tube, and confirm the drain trap is clear. No special tools required.