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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube built for the AMV91155DXBA 96% AFUE gas furnace and compatible Goodman/Amana condensing units. This longer run of factory tubing carries acidic condensate from the collector box to the drain trap, keeping the heat exchanger, inducer, and pressure switch ports clear during both heating stages. A properly draining condensate path is essential to reliable ignition and to preventing water backup that triggers pressure-switch lockouts.
This OEM hose ships at the exact 23-inch length and diameter the furnace requires — no measuring, cutting, or adapting. Generic bulk tubing is cheaper by the foot but frequently loosens on the barbed fittings or collapses under the negative pressure of the inducer, causing slow leaks that go unnoticed until they damage the cabinet or floor. The genuine 20201902 removes that risk and keeps your Goodman warranty intact.
Rated Easy (1 of 5). Turn off power, pull the old hose from the collector box and trap fittings, press the new hose fully onto each barb, and re-secure the clamps. Typically a 10–15 minute job with no special tools.
Compatibility note: Verify your model and serial before purchase. Fits AMV91155DXBA; email info@nationalhvacparts.com to confirm additional models.