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The Goodman 20201802 is a genuine OEM condensate drain hose tube engineered for the WGFM295090V5DAA high-efficiency gas furnace and compatible Goodman/Amana 90%+ AFUE models. This flexible drain tube routes condensate away from the secondary heat exchanger and inducer assembly, preventing water pooling, corrosion, and nuisance lockouts. Using the factory-spec part ensures correct length, inside diameter, and heat-resistant material for a leak-free seal.
Genuine OEM tubing is molded to the exact bend radius and durometer Goodman specifies, so it seats fully on the drain nipples without kinking. Generic aftermarket tube often has the wrong wall thickness or ID, leading to slow leaks and repeat service calls. For a condensate path, OEM fit is worth the small price difference.
Easy — DIY friendly (approx. 15 minutes). Power down the furnace, slide the old tube off the drain barbs, route the new 20201802 along the original path, and secure the clamps. No special tools required. Verify a clear downhill slope to the drain and test for leaks before returning to service.