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The Goodman 20201901 is a factory-original condensate drain hose tube engineered for the AMVC950905CXAC variable-capacity 95% AFUE furnace and compatible Goodman/Amana condensing models. This pre-formed tube routes acidic condensate through the furnace's internal drain system with the exact length and bend geometry needed to avoid kinks, back-pitch, and pooling. Because it complements the 20201802 hose in the drainage circuit, using the matching OEM part ensures every connection seals and drains as the factory intended.
Generic tubing sold by the foot rarely matches the molded bends and connector sizes of your furnace, inviting leaks and drainage faults. This genuine OEM Goodman hose is a direct replacement that fits the original barbed fittings and drain path precisely.
Turn off power, slide the old hose off its fittings, and seat the new tube fully on each port. Roughly 10–15 minutes; verify a continuous downward slope to the trap and check for leaks on restart.