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The genuine Goodman 20201901 condensate drain hose is the factory replacement tube for the GME951005DXAB high-efficiency gas furnace. It carries acidic condensate from the collector box and drain trap to the outlet, and its high-temperature material resists the corrosion that degrades ordinary vinyl tubing. Brittle, kinked, or split drain hoses are a frequent source of water leaks and pressure-switch faults on condensing furnaces.
Generic hose cut from a roll rarely matches the pre-formed bends, inside diameter, and barb fit of the original, and often kinks in the tight furnace cabinet. The OEM 20201901 is molded to the exact routing this model needs, seating cleanly on the factory barbs for a leak-free seal without clamps fighting the geometry.
Very Easy (1/5). A 10-minute job: power down, pull the old hose off both barbs, press the 20201901 into place, and confirm each connection is fully seated. Pour water through the trap to check for leaks before returning the furnace to service.