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The Goodman 20201901 Drain Hose Tube is a genuine OEM condensate drain component for the Goodman/Amana AMH950904CXAG high-efficiency condensing furnace. This hose carries corrosive combustion condensate from the collector box and secondary heat exchanger to the furnace drain trap. Because condensate is acidic, only OEM-grade tubing is rated to resist degradation over years of service — a failed hose leads to cabinet leaks, rust, and pressure-switch faults.
The OEM 20201901 is molded to the precise routing and fitting diameters used inside your furnace, ensuring a leak-free press-fit. Generic replacements often require trimming and clamping and can kink at tight bends, restricting drainage. Choosing the factory part eliminates guesswork and repeat callbacks.
Plan on 10–15 minutes. Disconnect power, pull the old hose off its barbed connections, flush the trap of any biofilm, then push the new hose fully onto both fittings and secure clamps if present. Confirm a continuous downhill slope to the drain.