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The genuine OEM Goodman 20201902 is a pre-cut 23-inch condensate drain hose designed for the GMH950904CXAE 96% AFUE condensing furnace and related Goodman/Amana high-efficiency models. This longer hose carries acidic condensate from the collector box or drain trap to the furnace outlet, ensuring reliable water removal that keeps the pressure switch and heat exchanger operating safely. A cracked, brittle, or clogged drain line is a leading cause of water leaks and unexpected furnace lockouts on high-efficiency systems.
Because this hose is cut to the exact 23-inch factory length with the correct diameter, it routes cleanly through the cabinet without kinks or slack that could trap water. Generic bulk tubing must be cut and fitted by hand, risking a wrong length or loose barb connection. The OEM 20201902 drops right in for a guaranteed fit.
Difficulty: Easy (1/5). Turn off power, remove the old hose from its fittings, clear the drain path, and push the new 23-inch hose fully onto each barb. No cutting or tools required — typically a 10-minute job. Confirm drainage and check for leaks during the next heat cycle.