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The Goodman 20201802 Drain Hose Tube is a genuine OEM condensate tube for the ACVC951155DXAA high-efficiency gas furnace and compatible Goodman/Amana models. It carries acidic condensate between the collector box, inducer drain, trap, and the main drain line. Because furnace condensate is mildly corrosive, the factory hose is molded from the correct chemical-resistant material and pre-formed to the right length and bend so it routes cleanly without kinking.
OEM tubing is cut and shaped to your furnace's drain routing, so it seats on the factory hose barbs without stretching or pinching. Generic hose by the foot can be the wrong inner diameter or stiffness, which leads to slow leaks at the connections or kinks that back up condensate and trip the pressure switch.
Easy (DIY-friendly). A 5–10 minute swap — slide the old hose off the barbs and push the new one on, securing any clamps. Turn off power and gas first, and run the furnace through a heat cycle afterward to confirm the drain path is leak-free.