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The Goodman 20201902 Drain Hose Tube is a genuine OEM 23-inch condensate drain line built for the AMVM960805CXBA modulating gas furnace. Its factory-set length spans the specific run between the furnace condensate outlet and the drain trap, ensuring a continuous downhill slope with no sagging loops that could hold water. Because condensate is mildly acidic, using the correct OEM tubing prevents premature degradation and the leaks that lead to pressure-switch faults and cabinet corrosion.
The OEM 20201902 arrives pre-cut to the exact 23-inch length with the correct inside diameter for the AMVM960 fittings. Generic bulk tubing must be measured, cut, and adapted by hand, and an incorrect length can create low spots that trap condensate and cause intermittent lockouts. The factory part eliminates guesswork and installs in seconds.
Difficulty: Easy (DIY-friendly). Plan on about 10 minutes with the furnace powered down. Detach the old hose at both connection points, press the 20201902 onto the matching nipples, and verify a clean downward slope to the trap. Confirm the trap is primed and clear before restoring power. For any work inside the burner or induced-draft area, a licensed technician is recommended.