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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube built for the GMH951155DXAG 96% AFUE gas furnace and related high-efficiency Goodman/Amana units. This longer run carries acidic condensate from the collector box and inducer assembly to the drain trap. Because it is cut to the exact factory length, it routes cleanly inside the cabinet without excess slack that can sag, pool water, and trigger nuisance pressure-switch lockouts.
A generic hose forces you to guess the length and trim it yourself — too long and it sags into a water trap, too short and it strains the fittings. The OEM 23-inch tube arrives pre-sized to Goodman's engineered routing, so it maintains a continuous downward slope and seals correctly at both ends. That means proper drainage, no standing condensate, and fewer callbacks from flooded pressure switches.
Easy (1 of 5). Power and gas off, release the clamps on the old hose, install the new 23-inch tube along the same path, and re-clamp. Under 15 minutes with basic tools. Confirm the downhill slope to the trap and check for a clear drain before restoring power.