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The Goodman 20201802 Condensate Drain Hose is the genuine OEM flexible drain tube for the ACVC90704CXAA 96% AFUE condensing gas furnace. It carries condensate between the collector box, drain trap, and discharge line. Over time these hoses become brittle, kinked, or algae-clogged, leading to leaks and pressure-switch trips — replacing the hose during routine service restores proper drainage.
The OEM Goodman hose is pre-cut and molded to the correct inside diameter and bend, so it slips onto the factory barbed fittings without leaks. Generic tubing can be cut to length for less money but may not match the ID exactly, risking slip-offs or restricted flow. For a clean, leak-free drainage path, choose the OEM hose.
Easy (1/5). Slip the old hose off the barbed fittings and push the new one on; secure clamps if used. About 5–10 minutes. Power down the furnace and keep a towel handy for drips.