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The Goodman 20201802 Condensate Drain Hose Tube is a genuine OEM replacement for the GMH950704CXAB and related Goodman/Amana high-efficiency gas furnaces. This flexible tube routes acidic condensate between the secondary heat exchanger, collector box, drain trap, and outlet. Over time, hoses can crack, harden, or clog with scale and biofilm, causing leaks, water backups, and pressure-switch lockouts. Replacing a worn hose restores reliable condensate flow.
The OEM Goodman hose is cut and formed to the correct length and inside diameter for a leak-free press-fit onto your furnace's drain ports. Generic tubing may have a different bore or wall thickness, leading to loose connections and leaks. Given the low cost and the water-damage risk of a poor fit, OEM is the smart choice.
Easy (1/5). Usually a 10–15 minute swap — slide off the old hose, clear any debris, and press the new tube firmly onto each port. Confirm connections are snug and leak-free before restarting. Turn off power and gas first.