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The Goodman 20201802 is a genuine OEM condensate drain hose / tube designed for the Goodman GCV91155DXBB high-efficiency gas furnace and compatible models. This flexible tube carries acidic condensate from the collector box, inducer, or drain trap to the furnace's drain outlet. Its flexibility allows it to route around internal components without kinking, while its material resists the corrosive condensate produced by condensing furnaces. Cracked, brittle, or clogged hoses cause water leaks and can back up condensate into the pressure switch, triggering intermittent no-heat faults.
This genuine Goodman OEM hose is sized to the exact inner/outer diameter and length for a secure slip-fit and proper flow. Generic tubing may be the wrong diameter or a material that hardens quickly, leading to slip-offs or premature cracking.
Very easy — 1/5. A slip-fit hose secured by clamps or friction. Power down the furnace, pull the old hose, clean the fittings, and press the new one on — routing it without sharp bends or low spots that could trap water. Confirm free drainage on the next condensing cycle.