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The Goodman 20201802 is a genuine OEM condensate drain hose tube designed for the GCH950703BXAC high-efficiency gas furnace and related Goodman condensing models. This flexible tube routes acidic condensate between the secondary heat exchanger, drain trap, and outlet connection. Over time, drain hoses become brittle, kinked, or algae-clogged — restricting flow and tripping the furnace pressure switch. Replacing a worn hose restores proper drainage and prevents water backup inside the cabinet.
Genuine Goodman tubing is molded to the correct inner diameter and length for a leak-free press fit on your furnace's drain ports. Generic bulk tubing may be the wrong bore, slip off under condensate weight, or degrade faster from the acidic runoff. The OEM 20201802 ensures a secure, lasting connection.
This is a beginner-friendly repair completed in 10–20 minutes. Turn off the furnace, slide the old hose off its barbed fittings, route the new 20201802 in the same path, and press it firmly onto each connection. Confirm there are no kinks and test drainage by running the furnace through a heat cycle.