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The Goodman 20201901 is a genuine OEM condensate drain hose tube engineered for AMV90453BXAB high-efficiency (90%+ AFUE) gas furnaces. During normal condensing operation, flue-gas condensate must be routed cleanly away from the heat exchanger and inducer assembly — this factory-molded tube maintains the correct routing, bend radius, and sealed connections to prevent leaks, blockages, and nuisance pressure-switch lockouts.
The OEM 20201901 is a pre-formed, model-specific tube that seats without modification and resists condensate acidity for the life of the unit. Universal aftermarket hose must be cut and fitted by hand, is prone to kinking at the factory bend points, and can back up condensate into the collector box. For a leak-free, warranty-safe repair, OEM is the recommended choice.
Easy — 15–20 minutes with basic hand tools. Shut off power and gas, disconnect the old tube from the collector box and drain trap, seat the new tube, and verify a clear condensate path before restarting.