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The Goodman 20201802 is a factory-original condensate drain hose/tube for the AMH950905DXAC 95% high-efficiency furnace. It routes acidic condensate between the secondary heat exchanger, coil, trap, and drain outlet. These molded hoses are pre-formed to specific bend angles and lengths so they clear internal components without kinking. Over time the OEM rubber can harden, split, or slip off its barb — causing water leaks, cabinet corrosion, and pressure-switch lockouts.
Because this tube is molded to a specific shape, generic straight hose often kinks or pulls tight at the barbs, restricting drainage. The OEM 20201802 drops into the exact routing the furnace was designed around, ensuring free-flowing condensate and a secure, leak-free connection.
Difficulty: Easy. Power down, pull the old hose off both barbed fittings, and press the replacement into place — orienting the molded bends as they came out. A quick 5–10 minute repair. Check the trap and neighboring hoses for wear while access is open.