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The Goodman 20201901 is a genuine OEM condensate drain hose tube for the WGFM195070S3BAD modulating 95% AFUE gas furnace. It carries condensate from the secondary heat exchanger assembly to the drain trap, maintaining a sealed, properly sloped path for reliable high-efficiency drainage.
Generic tubing rarely matches the molded bends and connector geometry of this hose, which leads to slow leaks, trap starvation, and nuisance pressure-switch lockouts. The OEM 20201901 is formed to Goodman's exact spec so it seals the first time and holds up to the acidic condensate produced by condensing furnaces.
Easy (1/5). Cut the furnace power, release the clamps or push-fit connectors on the old hose, route the replacement along the factory path, and re-secure. Prime the trap and check for leaks on restart before closing the cabinet.
This is a direct-fit OEM replacement. Match the printed number on your current hose to 20201901 to confirm before ordering.