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The Goodman 20201802 Drain Hose Tube is a genuine OEM condensate line component for AMH950905DXAB high-efficiency gas furnaces. In a 95% AFUE furnace, the secondary heat exchanger produces acidic condensate that must be routed reliably to the drain. This factory-molded hose is shaped and sized to fit the furnace's internal drain routing without kinking, ensuring proper flow and preventing water backup into the collector box or blower compartment.
Generic tubing can be cut to length but rarely matches the OEM's pre-formed bends, which are designed to avoid pinch points inside the tight furnace cabinet. The OEM 20201802 drops in with no trimming or guesswork, reducing the chance of leaks and future clogs.
Difficulty: Very Easy (DIY-friendly, under 10 min). Power down the furnace, release the hose clamps, remove the old tube, and slide the OEM replacement onto the same fittings. Confirm a tight, leak-free seal and run a condensate test before returning the unit to service.