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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube built for the AMV90905DXBB high-efficiency gas furnace. This longer run of tubing carries acidic combustion condensate from the collector box and inducer to the drain trap. Over time, drain hoses harden, split, or clog with biofilm — restricting flow and tripping the furnace on pressure-switch or overflow faults. Replacing it with the correct factory length keeps condensate moving freely and your furnace running.
Cutting a generic hose to length rarely matches the OEM inner diameter or routing, inviting kinks and leaks. This OEM Goodman hose arrives pre-cut to the exact 23-inch specification with the correct wall thickness for a clean, drip-free install.
Easy (1 of 5). Swaps in within 10–15 minutes using basic tools. Cut power and gas before servicing. When in doubt, hire a licensed HVAC professional.