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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for the ACV90704CXBB high-efficiency furnace and other compatible Goodman/Amana 90%+ AFUE models. This flexible drain line routes acidic condensate away from the secondary heat exchanger and inducer assembly to the drain trap, protecting the cabinet and internal components from corrosion and water damage. A cracked, brittle, or clogged drain hose is one of the most common causes of furnace lockouts triggered by the pressure switch or condensate overflow safety.
This genuine Goodman OEM hose is molded to the exact bend radius and inner diameter your furnace expects, so it seats cleanly on factory barbed fittings without kinking or leaking. Generic universal tubing often requires trimming, splicing, or hose clamps and can collapse under suction from the inducer, leading to nuisance pressure-switch faults. For a high-efficiency condensing furnace, the correct OEM drain path is worth the small price difference.
Easy (DIY-friendly). Power down the furnace, slide the old hose off the barbed fittings, route the new 23-inch tube along the original path, and secure both ends. Most homeowners complete the swap in 10–15 minutes with no special tools. Always confirm the drain trap is clear and the condensate flows freely after installation.