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This genuine OEM Goodman 20201802 drain hose tube is a direct-fit replacement for the AMVM961005DXAA high-efficiency condensing furnace and other Goodman/Amana 96%+ models that use the same condensate routing. In a condensing furnace, the secondary heat exchanger produces acidic condensate that must be carried away cleanly; a cracked, brittle, or mismatched hose leads to leaks, water under the furnace, and nuisance pressure-switch lockouts.
The OEM hose is molded to the exact length and bend geometry required so it seats on the drain trap and collector box without kinking. Generic vinyl tubing cut to length often collapses at tight bends, restricting flow and causing overflow. For reliable drainage the factory part is the safer choice.
Easy. Slide the hose onto the fittings and secure any retaining clip. Most homeowners complete the swap in 5–10 minutes with no tools. Always inspect adjacent drain lines and the trap for debris while you have the panel open.