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The Goodman 20201902 is a genuine OEM 23-inch condensate drain hose tube designed for the GMH950905DXAA 96% AFUE two-stage gas furnace. It routes condensate away from the secondary heat exchanger and collector box to the drain trap, preventing water backup that can trip pressure switches or cause nuisance lockouts.
This is a factory OEM Goodman part, cut and formed to the exact length and bend radius the GMH950905DXAA drain path requires. Universal aftermarket hose can kink or sit at the wrong angle, trapping water and causing intermittent shutdowns. The OEM tube installs with the correct routing the first time.
Easy (1/5). Slip the old hose off the barbed fittings, seat the new tube, and secure the clamps. No tools beyond a nut driver or pliers are typically required. Always shut off power and gas before servicing.