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The Goodman 20201901 is a genuine OEM condensate drain hose designed for the GMH951155DXAE high-efficiency 96% AFUE gas furnace. In condensing furnaces, combustion produces acidic condensate that must be routed away cleanly. This factory-molded hose connects the secondary heat exchanger and collector box to the drain system, and its correct length and bend radius prevent kinks, air locks, and nuisance pressure-switch trips.
The OEM hose is pre-formed to the exact factory length and geometry, ensuring proper drainage slope and a leak-free fit. The Generic equivalent uses comparable heat-resistant material at a budget-friendly price for straightforward repairs. Both options fit the listed models.
Replacement takes about 10 minutes. Power down the furnace, release the retaining clamps, pull the old hose, and seat the new one on the same fittings. Confirm all connections are snug and that condensate flows freely to the trap and drain.