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The Goodman 20201802 is a genuine OEM condensate drain hose tube built as a direct-fit replacement for the GCH950904CXAD high-efficiency gas furnace. This molded high-temperature hose routes acidic condensate from the collector box and drain trap to the drain line, and its exact pre-formed shape prevents the kinks and sagging low spots that trap water and trip the furnace's pressure switch. Over time factory hoses become brittle, cracked, or clogged with biofilm — replacing this tube restores reliable drainage and clears many recurring lockout codes.
The genuine Goodman hose is molded to the precise length, bend radius, and barb diameters of your furnace's drainage path. Generic bulk tubing must be cut and bent to fit, which invites kinks, loose connections, and slow leaks. For a component whose routing directly affects pressure-switch operation, OEM is the reliable choice.
Easy — Power off the furnace, note the routing of the old hose, slide it off its barbed fittings, and press the new hose into place. Confirm there are no low spots that could hold water. Most homeowners finish in 10–15 minutes.