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The Goodman 20201802 is a factory OEM condensate drain hose designed for the GMH950904CXAD 96% AFUE condensing gas furnace. It routes acidic condensate between the collector box, drain trap, and drain line. Because the tubing is exposed to warm, corrosive condensate, it can harden, split, or slip off over time — leading to water leaks, cabinet corrosion, and pressure-switch faults.
Replacing worn tubing with the correct OEM hose ensures a leak-free, properly sized condensate path and helps prevent nuisance lockouts caused by trapped water.
The OEM hose is cut to the correct diameter and length to seat firmly on the furnace's barbed ports without kinking. Generic tubing may be the wrong bore or too stiff, causing loose connections and leaks. For a low-cost part in a critical drainage path, OEM is the safe choice.
Easy — slip the hose onto the barbed fittings and secure with the supplied clamps, matching the routing of the old tube. A DIY-capable homeowner can complete this in minutes. Prime the drain trap with water and check for leaks at startup.
Shut off power before servicing.