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The Goodman 20201901 is an OEM molded condensate drain hose for the AMS950703BXA gas furnace. It carries acidic condensate from the secondary heat exchanger and collector box through the trap to the drain, using factory bend angles that keep the line free-flowing and prevent water from backing up against the pressure switch.
The OEM hose is shaped and sized specifically for this furnace's drain circuit, so it installs without trimming or guesswork and holds a reliable seal. Generic tubing saves a few dollars but requires cutting to length and careful routing to avoid sags that collect condensate. Choose OEM when correct drainage and furnace safety matter.
Easy (1 of 3). Shut off power, photograph the routing, remove the old hose from its barbed fittings, and press the new hose into place following the same path. Roughly 10–15 minutes, no special tools.