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The Goodman 20201902 23-inch Drain Hose Tube is a genuine OEM condensate line for the GMH950905DXAE 96% AFUE condensing gas furnace. Cut to a factory length of 23 inches, it carries acidic condensate from the furnace's collector box and drain-trap assembly to the disposal point. Keeping this hose intact prevents leaks, water damage, and the condensate backups that commonly trigger pressure-switch lockouts.
At the correct 23-inch length, this hose reaches its fittings without stretching or coiling into water-trapping loops. Generic tubing requires field cutting and often kinks at bends. The OEM part guarantees the exact run the furnace was engineered for.
Plan on 10–15 minutes. Shut off power, remove the old hose from its barbed connections, and firmly seat the new 23-inch hose on each fitting. Route it with a continuous downward slope, confirm no sags trap water, and test for free drainage before restarting the furnace.