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The Goodman 20201901 is a genuine OEM condensate drain hose/tube built for the AMH950703BXAG 96% AFUE condensing gas furnace. It carries corrosive condensate from the secondary heat exchanger and collector box to the drain trap. Because it is pre-formed to the correct length and bend geometry, it eliminates the sags and airlocks that cause standing water, pressure-switch trips, and intermittent furnace lockouts.
Substituting generic hose often means guessing at length and forcing mismatched fittings, which invites leaks and drain problems. This OEM tube is a true direct-fit replacement that seats on the original ports and resists breakdown from acidic condensate far longer than off-the-shelf vinyl.
Easy. Typically 10–20 minutes with no special tools. Shut off power, loosen the clamps or fittings, remove the old tube, and route the new one identically. Verify a continuous downhill slope with no water-holding dips before restoring power.