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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube built for the GMS951155DXA 96% AFUE multi-speed gas furnace and compatible Goodman high-efficiency models. This longer run of chemical-resistant tubing routes acidic condensate from the furnace's secondary heat exchanger and collector box down to the drain trap and field drain line. Because condensing furnaces generate water continuously during a heating cycle, a sound drain hose is essential to prevent leaks, freeze-ups, and pressure-switch trips.
The OEM 20201902 arrives at the correct 23-inch length with the proper inside diameter to seat firmly on Goodman drain ports. Generic tubing sold by the foot can save a few dollars, but you must cut it accurately and verify chemical compatibility with acidic condensate. The OEM part removes the guesswork and resists degradation over years of service.
Easy (1/5). Cut power to the furnace, detach the old hose from both fittings, and press the new one on, securing any factory clamps. No cutting or special tools needed with the OEM length. Plan on roughly 15 minutes. Verify your furnace model before purchase.