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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for AMVM960603BXAA high-efficiency furnaces. This flexible tube routes acidic condensate away from the secondary heat exchanger and collector box to the drain trap, preventing water backup, corrosion, and nuisance pressure-switch lockouts. Using the exact factory-spec hose keeps your furnace's condensate path sealed and correctly pitched.
Our OEM 20201902 hose matches the factory inner diameter, wall thickness, and length so it seats on the collector box and trap without kinking or leaks. Generic aftermarket tubing is offered at a lower price for budget repairs, but may require trimming and can vary in flexibility and chemical resistance. For a warranty-safe, leak-free condensate path we recommend the genuine OEM tube.
Difficulty: Easy — Most DIYers complete this in 10–15 minutes. Power down the furnace, slip the old hose off the barbed fittings, seat the new hose fully on both ends, and secure any clamps. Confirm the run maintains a continuous downward slope and run the furnace to verify condensate flows freely to the trap.
Always shut off power and gas before servicing. If you are unsure of routing or your furnace shows repeated drainage faults, consult a licensed HVAC technician.