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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube built for the WFD195045S3BAA high-efficiency gas furnace and compatible Goodman/Amana models. This pre-cut 23" run carries acidic condensate from the collector box or trap to the furnace's drain outlet or condensate pump. The factory length ensures the hose reaches its termination without excess slack that can sag, trap water, and cause the pressure switch to fault out on a blocked drain.
The OEM 20201902 arrives cut to the exact 23-inch length and correct bore for Goodman drain barbs, so it seats tight and slopes properly on the first try. Generic bulk hose must be measured and trimmed, risks the wrong inside diameter, and can slip loose under thermal cycling. Genuine parts guarantee a spec fit and protect your warranty.
Expect a 10–15 minute swap. Power down the furnace, remove the clamp or clip from the worn hose, detach it, and press the 23" replacement fully onto both fittings. Keep a steady downhill slope with no kinks, then confirm condensate drains freely and check for leaks before restarting.