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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube engineered for the Goodman GCV90704CXBB high-efficiency gas furnace. This flexible tube routes condensate away from the secondary heat exchanger and drain trap, preventing water backup and nuisance shutdowns caused by clogged or cracked drain lines.
The genuine OEM 20201902 is molded to the exact length and inner diameter Goodman specifies, so it seats on the drain fittings without kinks or leaks. Universal aftermarket tubing often needs trimming and can collapse under negative pressure, leading to standing water and code-sensor faults. Choosing OEM guarantees a leak-free, first-try fit.
Rated Easy (1/5). Power down the furnace, slide the old hose off its barbed fittings, and press the new tube fully onto both connections. No tools or brazing required — most installs take under 10 minutes.