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The Goodman 20201802 is a factory OEM condensate drain hose tube engineered for the GMH950905DXAB 96% AFUE gas furnace and compatible Goodman/Amana high-efficiency models. It routes acidic condensate away from the secondary heat exchanger and collector box, protecting internal components from corrosion and preventing nuisance pressure-switch lockouts caused by a clogged or cracked drain line.
This genuine OEM tube is molded to the exact length, bend radius, and barb diameter Goodman specifies, so it seats on the collector box and drain fittings without leaks. Generic aftermarket hose often requires trimming, added clamps, or splices that create failure points. For a component that carries corrosive condensate 24/7, OEM fit is the reliable choice.
Easy (1/5). A DIY-friendly swap — power down the furnace, slip the old hose off the barbs, seat the new tube, and confirm free drainage to the trap. Always follow Goodman service instructions and confirm the model tag before ordering.