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The Goodman 20201802 is a genuine OEM condensate drain hose/tube designed for AMVC950905CXAB high-efficiency condensing gas furnaces. In a 95% AFUE furnace, the secondary heat exchanger produces acidic condensate that must be routed reliably to the drain trap and out of the cabinet. This factory-molded hose ensures the correct length, bend radius, and fitting diameter so it seats leak-free without kinking.
The OEM 20201802 is cut and formed to the exact routing path inside the furnace cabinet. Generic aftermarket tubing can be the wrong bore size or wall stiffness, leading to slow leaks, blockages, or connections that pop off under condensate load — a common cause of water damage and inducer/pressure-switch faults.
Easy — roughly 10–15 minutes. Power down the furnace, slide the old hose off its barbed fittings, and press the new hose fully onto both connections. Confirm a snug seat and a continuous downhill slope to the trap. No special tools required.