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The Goodman 20201802 condensate drain hose tube is a factory replacement drainage hose for the GMH950453BXAB 95% AFUE furnace and related high-efficiency models. This pre-cut, high-temperature tube routes acidic condensate between the collector box, drain trap, and vent components. Over time original hoses stiffen, crack, or clog with biofilm — replacing them restores proper drainage and prevents leaks and pressure-switch faults.
OEM vs. Generic: This OEM hose is molded to the exact length and bend radius Goodman specifies, so it seats on the factory barbs without kinking. Generic bulk tubing often has the wrong ID or wall thickness, leading to slip-offs and leaks. The genuine part ensures a leak-free, warranty-safe repair.
Install difficulty: Very Easy (1/5). Power down, slide off the old hose, press the new one onto the same fittings, and secure any clamps. A quick 5–10 minute replacement with no tools beyond pliers.